Answer:
Although the pictorial representation is not clear but the question can be answered based on the known structure of each biomolecule. The answer is:
Carbohydrate
Explanation:
Carbohydrate is one of the four biological molecules in living systems. Carbohydrates are composed of long chains of carbon, hydrogen and oxygen in a 1:2:1 ratio i.e (CH2O)n empirical formula.
The structure of carbohydrate is composed of a ketone (C=O) or aldehyde (CHO) functional group and hydroxyll groups (OH). The simplest unit of any carbohydrate is called a monosaccharide. Hence, from the above structure in the question, which consists of long chain of carbon, hydrogen and oxygen atoms, it can be identified as a CARBOHYDRATE.
can a steam cell taken from a baby, and giving the cell all that needs, can make clone
Answer:
i think so
Explanation:
Clones contain identical sets of genetic material in the nucleus—the compartment that contains the chromosomes—of every cell in their bodies. Thus, cells from two clones have the same DNA and the same genes in their nuclei.
Ergogenic aids can be useful in some circumstances, some are possibly useful but still under study, and still others are downright dangerous and illegal. 1. human growth hormone.
2. anabolic steroids
3. creatine
4. caffeine
5. beta-hydroxy-beta methylbutyric acid (HMB)
6. branched-chain amino acidsA. The use of_____may improve performance for those who undertake repeated bursts of activity, such as in sprinting or weightlifting.B. Consuming small amounts of_______can increase menta alertness. C. Consuming______may enhance muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but may also cause uncontrolled growth of the heart or other organs and is banned by the International Olympic Committee is______.
Answer:
Using beta-hydroxy-beta methylbutyric acid (HMB) can improve performance for those who perform explosive repetitions of activity, such as running or lifting weights. Consuming small amounts of caffeine can increase mint alertness. C. The consumption of branched-chain amino acids and creatine can improve muscle recovery after intense physical activity. D. An ergogenic aid that increases muscle mass but can also cause uncontrolled growth of the heart or other organs and is prohibited by the International Olympic Committee: anabolic steroids.
Explanation:
In the answer I leave you the text with the blanks completed ... It is also important that you know that amino acids are important for the formation of muscle mass and its recovery, in addition to creatinine.
On the other hand, these supplements are administered in people who have high performance in sports, and accompanied by a good diet and specific diet, otherwise they will not work.
Anabolics are chemical structures that promote energy reserves and anabolism for muscle tissue hypertrophy, but they do not have a selective effect on the skeletal muscle, but rather affect other parts of the body, that is why they are risky, cause heart failure, cardiovascular, liver, kidney, and even possible alterations of the gallbladder.
Which statement about balancing selection is correct? View Available Hint(s) Hint 1.opened hint What is balancing selection, and how does it differ from other forms of selection? Which statement about balancing selection is correct? When balancing selection occurs, no single phenotype has a distinct advantage over others in terms of fitness. When balancing selection occurs, all phenotypes have equal fitness. When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare. When balancing selection occurs, phenotype does not matter.
Answer:
Correct statement: When balancing selection occurs, certain phenotypes are favored when they are common but not when they are rare
Explanation:
You will find the explanation in the attached file due to technical problems.
the size of ribosome of _________cell is smaller than ribosome of plant cell. A. Animal cell B. fungal cell C.Bacterial cell D. Protists cell
Answer:
the size of ribosome of (animal cell )is smaller than ribosome of plant cell
Answer:
Animal cell is smaller than ribosome of plant cell
Explanation:
Which is a primary function of a vacuole in a cell?
O A. enzyme production
O B. protein synthesis
O C. storage
D. reproduction
Answer:
C. storage
Explanation:
Vacuoles are membrane-bound sacs within the cytoplasm of a cell that function in several different ways. In mature plant cells, vacuoles tend to be very large and are extremely important in providing structural support, as well as serving functions such as storage, waste disposal, protection, and growth.
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Storage (Option C)
Explanation:-Vacuoles store dissolved materials such as amino acids, sugars, organic acids and some type of proteins.Like, In Amoeba they store the food material, ingested by the organism.Explore more:-Vacuoles are membrane bound organelles mostly found in plant and fungal cells.The term was coined by "Dujardin".The membrane of vacuoles is called tonoplast.They are enclosed compartments which are filled with water containing inorganic and organic molecules. In plant cells, they are large and occupy almost 90% of the cell. But, they are small or even absent in animal cells.⏩️ Refer to the attachment....
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The table below shows the number of chromosome pairs for various
organisms.
Organism
Number of
Chromosome Pairs
16
Badger
Carp
Dog
52
39
Cat
19
Which organism can produce the highest number of genetically different
gametes?
A. Dog
B. Badger
C. Carp
D. Cat
Answer:
CArp
Explanation:
The correct option is C. Carp
What is the number of cells produced in mitosis?
Mitosis is a process of nuclear division in eukaryotic cells that occurs when a parent cell divides to produce two identical daughter cells.
Is carp a fish?Carp is a large freshwater fish native to central Asia. Introductions in many countries have helped to make carp the most widely distributed freshwater fish in the world. They are extensively farmed in Europe, Asia, and the Middle East, and are a popular angling fish in Europe.
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Which type of energy do you think is better: SOLAR ENERGY or WIND ENERGY?why do you think that ?
Answer:
wind energy
Explanation
wind power is more efficient than solar power or energy because this system use less energy release less carbon dioxide to the atmosphere and produce more overall energy a single wind turbine can generate same amount of electricity in Kwh as thousands of solar power panels
Answer: Wind Energy
Explanation: Wind power is considered more efficient than solar because they use less energy, release less carbon dioxide and produce more energy overall.
Wind energy runs 24 hour a day since it doesn't depend on sunlight to create energy unlike solar energy panels.
Galactosemia is an inherited genetic condition. Children with this condition cannot break down the sugar galactose, which is part of lactose. Based on the pedigree chart, is this condition a dominant or a recessive disorder? Explain your reasoning.
Answer:
Recessive.
Explanation:
Galactosemia is an autosomal recessive genetic disorder. Recessive genetic disorders occur when an individual inherits a non-working gene from each parent.
There is no chart attached, so the reasoning is just common scientific knowledge. Please attach the chart so I can properly answer the question!
Answer:
It is recessive. Both parents are heterozygous for the trait, but they do not exhibit the disease themselves. If it were a dominant gene, both parents would have the disease if they carried the gene for it.
Explanation:
This is the answer on edmentum! Thanks!
Human Bones
Name three components of bones and describe
their function.
Answer: 1st the periostneum which is the outside of the bone and a thin but dense layer that has nerves and blood vessels
2nd compact bone. It is very smooth and very hard
3rd and lastly Cancellous, this looks a little like a sponge but much harder.
Explanation:
Answer:
The periosteum is a thin, dense membrane that contains nerves and blood vessels that nourish the bone.
Compact bone is smooth and dense. It is the hard part of the bone.
Cancellous bone looks like a sponge and protects the bone marrow.
Bone marrow is a thick jelly that makes blood cells.
Explanation:
These are the check offs for edge 2021
What are two ways the excretory system helps the body maintain homeostasis?
Answer:
1.Osmoregulation
2.Thermoregulation
Explanation:
1.Osmoregulation is the maintenance of constant amount of water in the body of an organism.The kidney is responsible for this phenomenon as in it has a nephron in which at a particular part of the nephron,i.e the conducting tube which sites a hormone called the anti diuretic hormone which makes the walls of the conducting tube permeable to allow the movement of water from the urea back into the body before it is transferred into the bladder for to be released into the external environment.
2.Thermoregulation involves the maintenance of heat in the body of an organism.The skin is responsible for this process.It has hairs which lie on the surface of the skin to loose heat to the external environment during the hot days and also stands on the surface of the skin which trap a film of air on the skin surface to prevent heat loss in the cold days.
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Answer:
The kidneys control the amount of water, ions, and other substances in the blood by excreting more or less of them in urine. The kidneys also secrete hormones that help maintain homeostasis.
Explanation:
Discuss how the idea of vertical farming reflects the role of science in society.
Answer:
average global food prices have gone up by 2.6 percent annually in the past two decades. if that trend continues , not only does it threaten a baseline quality of life as more disposable income goes toward.Vertical farming is the practice of growing local crops like fruits and vegetables with minimal resources by using high technological methods in a controlled environment.
Why vertical farming is important?It has been said to be the future of agriculture in the UAE since they huge amount of goods and have to find ways to be self sustaining by boosting local production. Apart from being self sustaining, they also aim to provide safe and nutritious food.
The vertical garden is an agriculture concept for growing plants inside buildings or multi-story skyscrapers, often called farmscrapers, a term derived from the English skyscraper. In these buildings, which would function as large greenhouses, agriculture involves the use of technologies such as hydroponics to aid in plant growth. Some projects include the practice of livestock (especially poultry) on the lower floors.
Therefore, Vertical farming is the practice of growing local crops like fruits and vegetables with minimal resources by using high technological methods in a controlled environment.
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Interpreting an Expression Quick Chec How many factors does the expression (17 –r) have? O four O two one three
Answer:
One
Explanation
an antibiotic is a type of medication that cures infectious diseases. why does the word antibiotic suggest that these medications would be ineffective against viruses?
Answer:
An antibiotic treats bacterial infections, not viral ones. For viruses, you would take antiviral medications.
Which of the following California animals is found in both marshlands and grasslands?
Answer:
pronghorn antelope.giant kangaroo rats.gophers.mule deer.what type of environment would you most likely find fish species 1?
Answer:
Different species of fish are adapted for different habitats: rocky shores, coral reefs, kelp forests, rivers and streams, lakes and ponds, under sea ice, the deep sea, and other environments of fresh, salt, and brackish water. Some fish are pelagic: they live in the open ocean.
Explanation:
Which is represented by the image?
Answer:
represent by image.
Explanation:
To store an image on a computer, the image is broken down into tiny elements called pixels. A pixel (short for picture element) represents one colour. ... In order for the computer to store the image, each pixel is represented by a binary value. We call this representation of colours a “bit-plane”.
Which of the following statements is true? Bacteria and protozoa are examples of unicellular organisms. Individual cells do not need to maintain homeostasis. Most multicellular organisms reproduce through mitosis. Two identical daughter cells are created from sexual reproduction.
Answer:
Bacteria and protozoa are examples of unicellular organisms.
Explanation:
Bacteria are prokaryotic organisms in which the genetic material is not enclosed in a membrane. Bacteria are one of the oldest groups on Earth. Bacteria may inhabit diverse environments such as the deep ocean, soils, acidic hot surfaces, radioactive materials, etc. On the other hand, protozoa (also known as protozoan) are unicellular, heterotrophic, eukaryotic microorganisms, whose genetic material is enclosed within a nucleus that has a membrane. This group was originally considered to be animals because they have animal-like features including, for example, motility and predation.
The statement "Bacteria and protozoa are examples of unicellular organisms" is true. Bacteria and protozoa are both single-celled organisms.
What are the false statements?The statement "Individual cells do not need to maintain homeostasis" is false. Homeostasis is the ability of cells to regulate their internal environment to maintain a stable condition necessary for proper functioning.
The statement "Most multicellular organisms reproduce through mitosis" is false. Most multicellular organisms reproduce through a process called meiosis, which involves the formation of specialized cells called gametes.
The statement "Two identical daughter cells are created from sexual reproduction" is false. Sexual reproduction involves the fusion of two gametes, resulting in the formation of a genetically diverse offspring.
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You collect a specimen from a deep jungle survey. It appears to be a new species. You
get to name it, but before you can, you must classify it first. It appears to be single celled,
and contains chloroplasts. When a few of them are kept in the dark too long, they die.
Under the microscope you can see a dark colored nucleus. What classification fits them
best?
O A. Archaeabacteria
B. Fungus
C. Plant
OD. Plant-like protist
Answer:
The correct option is;
D. Plant-like protist
Explanation:
Protists are a broad collection of not so strictly connected microscopic unicellular (single celled) eukaryotic organisms that is neither a fungus, plant, or an animal but are categorized under the kingdom known as Protista
Protophyta is a known plant-like protist that is made of single celled algae
Other single-celled chloroplast containing protists are diatoms, and dinoflgelates.
In response to increased levels of aldosterone, the kidneys produce In response to increased levels of aldosterone, the kidneys produce urine with a lower concentration of sodium ions. urine with a higher concentration of sodium ions. urine with less glucose. a larger volume of urine. urine with a lower concentration of potassium ions.
Answer:
The correct answer is urine with a lower concentration of sodium ions.
Explanation:
A hormone produced in the cortex or the outer section of the adrenal glands, which are located above the kidneys is known as aldosterone. The hormone plays an essential function in regulating the blood pressure primarily by functioning on the organs like colon and kidney to enhance the reabsorption of sodium or salt into the bloodstream and to enhance the concentration of potassium excreted in the urine.
Along with sodium, the hormone also works to reabsorb more concentration of water, which further increases the volume of blood and thus the blood pressure. Therefore, with the increase in the levels of aldosterone, the kidneys generate urine with a lower concentration of sodium ions.
In response to increased levels of aldosterone, the kidneys produce urine with a higher concentration of sodium ions. Therefore, option B is correct.
Aldosterone is a hormone produced by the adrenal glands, specifically in the zona glomerulosa of the adrenal cortex. It plays a crucial role in regulating sodium and potassium levels in the body.
When aldosterone levels increase, such as in response to low blood sodium levels or stimulation by the hormone angiotensin II. Then, it acts on the cells of the distal convoluted tubules and collecting ducts in the kidneys.
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what part of the universe do we live in??
A scientist has been working for 15 years to develop a new type of plastic material, but she has not yet been successful. Which of the following
best explains why her work is still a success?
a
New ideas often develop from unsuccessful experimentation.
b
The original problem was not solved and can now be abandoned.
с
Most scientists require several decades of experimenting before achieving their goals.
d
The scientist has demonstrated that there are no new plastics for scientists to develop.
Answer:
a. New ideas often develop from unsuccessful experimentation.
Explanation:
The scientists' work would still be considered a success because new ideas often develop from unsuccessful experimentation. Many of today's famous inventions and celebrities failed at the start of their career. However, because they did not give up on their goal, they eventually succeeded. A few examples of those people are Bill Gates, Albert Einstein, and Michael Jordan.
Here is an influential quote, said by Michael Jordan, that I think accurately supports this topic of discussion:
"I've missed more than 9,000 shots in my career. I've lost almost 300 games. 26 times, I've been trusted to take the game-winning shot and missed. I've failed over and over and over again in my life. And that is why I succeed."
A scientist has been working for 15 years to develop a new type of plastic material but she has not been successful. Her work is still a success because new ideas often develop from unsuccessful experimentation.
What are the principles of scientific research?There are various principles that need to be followed when scientific research is being carried out. Methods of self-regulation and authority regulation are both extremely important for conducting scientific research.
They both need to be followed as no one is sufficient without another. The basic principle for scientific working which is required to be followed by all scientists is respect for the work, the integrity of the knowledge, honesty about the data and openness about their mistakes.
Scientific principles are required to be followed in every stage of scientific research, right from the formation of a hypothesis to the publishing of results.
Therefore, even if research is not giving any results it is successful new ideas develop from unsuccessful experimentation.
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Studies of topsoil erosion on Iowa farmland shows that as much as 50 metric tons are lost per hectare during winter and spring rains. This loss is due to the loss of millimeters of soil from across the entire surface of the fields. Which type of erosion would this be?
Answer:
The type of erosion described in the question is called Water Erosion.
Explanation:
Note that the erosion is caused by winter and spring rains.
Water Erosion can happen when raindrops disintegrate the aggregates of the topsoil. The fragments collect into the soil pores and create a coagulating action which makes it difficult for the water to penetrate the soil. The rainwater having increasingly accumulated on the surface flows off along with the topsoil.
This type of erosion can be further aggravated if:
the rainfall is very heavy;the terrain has a steep gradient thus increasing the velocity of runoffthe soil type has a lower capacity to erosionCheers!
why is the linner wall of alimantary canal not digisteg although the digestive enzymes can digest all the materials that make cell?
Answer:
There are no options to this question but it can be answered by giving a general explanation. The answer is:
Because the digestive enzymes are not in direct contact with the cells that make up the walls of the alimentary canal. The walls are protected by mucuous lining.
Explanation:
Digestion of our ingested food is an important process for the effective functioning of our body system. Digestion is the process whereby food, which are usually macromolecules, are broken down into simpler molecules usable by the body. After food is taken in from the mouth (ingestion), it must be broken down by chemical and mechanical means.
The chemicals means is through digestive enzymes, which are proteinous chemical substances. The digestive system consists of the alimentary canal or digestive tract, which is a tube-like organ that forms the path for food passage. Since digestive enzymes secreted during digestion can disintegrate every macro biomolecule e.g protein, carbohydrate etc, it can also break down the molecules that make up the cells of the tract wall.
However, the digestive enzymes does not break down the cells of the canal's wall because the body system secretes mucus, which lubricates the passage of food along the canal. It also prevents the digestive enzymes from coming in contact and acting on the macromolecules that make up the cells of the walls of the alimentary canal.
Can I please have some help with this -> "2.59 describe the composition of the blood: red blood cells, white blood cells, platelets and plasma 2.60 understand the role of plasma in the transport of carbon dioxide, digested food, urea, hormones and heat energy"
Answer:
red blood cell helps on transportation of oxygen
white blood cell provide antibiodies which fight against diseases
platelets helps in blood clotting
Blood is a viscous connective tissue made up of a number of distinct elements. These consist of:
Red Blood cellsWhite blood cellsPlateletsPlasmaWhat is Blood?Blood is a viscous connective tissue made up of a number of distinct elements. These consist of:
1. Red blood cells, also known as erythrocytes, are the blood's most numerous cells and are in charge of carrying oxygen from the lungs into the body's tissues.
2. White blood cells, also known as leukocytes, are a component of the immune system of the body and are in charge of protecting the body against illnesses and foreign invaders.
3. Small cell fragments known as platelets, sometimes known as thrombocytes, are in charge of causing blood to clot and controlling excessive bleeding.
4. About 55% of the total volume of blood is made up of plasma, the liquid component of blood. It is a transparent, straw-colored fluid with a number of dissolved materials in it, such as water, electrolytes, proteins, hormones, and waste.
Plasma plays a crucial role in the transport of various substances throughout the body. Some of the substances that are transported by plasma include:
Carbon dioxideDigested foodUreaHormonesHeat energyTherefore, Blood is a viscous connective tissue made up of a number of distinct elements. These consist of:
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Sort the tiles to show the characteristics of life that they describe.
Answer:
The characteristics of the life shared by all living organisms.
Explanation:
There are seven characteristic of life shared by living things.
Reproduction :- these characteristics are performed that single cell organisms diving to the cell prepares to the form of the second new cell.Regulation :- regulation perform that complex and require to the internal functions and contain that specific function.Energy processing :- the energy process performed that source of energy for the metabolic activities, and convert the chemical energy.Homeostasis :- these characteristics maintain the internal conditions and diverse the chemical process.Growth :- these characteristics provide the instruction direct cellular growth and development .Sensitivity :- that can perform by the plant can be source of light, considered by the positive response .Order :- this is highly organized structure and cell complex to the molecules.how bone tissue and muscle tissue interact
Answer:
The bone tissue and muscle tissues interact for the system is more complex than components system is separately.
Explanation: Bone tissue and muscle tissue responsible for communication between bone and muscle is to research potential especially bone and muscle.
That they are bone and muscle are concept that bone and communicate biochemical and complementary and work bone and muscle in health and disease.
The bone and muscle in the viewed as that mechanical nature, bone simply the attachment sites, this is much more complex bone and muscle.
Development to the bone and muscle cells only a common experience a tightly networks of genes.
The muscle and bone regarding review article major goal of loading, bone and muscle relation mechanical coupling, and is also earliest muscle factors, bones are not through of as the pituitary adrenals, bone endocrine organ .
Over the period of a few days, a hospital receives an overwhelming increase in the number of patients with food poisoning. How would a scientist respond to this increase in sick patients? A. by examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consumed B. by giving the patients vitamin injections and prescribing a medication to calm their stomach and bowel symptoms C. by recording the patients' symptoms in their medical records and advising them to get rest and drink fluids D.by providing kind words, nurturing, and emotional support to the patients and asking them about their feelings
Answer:
A. By examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consume.
Explanation:
I believe a medical professional would be the one to prescribe patients with any sort of medicine they needed, whereas the scientist would be investigated what caused the food poison and running tests to help find out what happened.
Answer:
A. By examining the type and source of foods each patient ate and identifying patterns of overlap within the foods consume.
Explanation:
Chylomicrons A. are synthesized in intestinal epithelial cells. B. enter capillaries in the small intestine. C. help emulsify fats. D. are a rich source of carbohydrate. E. are synthesized in the lumen of the small intestines.
Answer:
E
Explanation:
I don't know. How Supposed to help you
Chylomicrons are synthesized in intestinal epithelial cells to transport long-chain triglycerides to the tissues. Therefore, option (A) is correct.
What are chylomicrons?Chylomicrons are lipoprotein particles made up of triglycerides, phospholipids, cholesterol, and proteins. They are also known as extremely low-density lipoproteins. They move dietary lipids from the intestines to other bodily parts.
Chylomicrons deliver lipids ingested from the gut to the adipose, cardiac, and skeletal muscle tissues, where their triglyceride components are digested by the action of the lipoprotein lipase, releasing the free fatty acids that may then be absorbed by the tissues.
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The following is a list of the steps that occur in the production of an auditory sensation. 1. The pressure wave distorts the basilar membrane on its way to the round window. 2. Movement of the tympanic membrane causes displacement of the malleus. 3. Displacement of the stereocilia stimulates sensory neurons of the cochlear nerve. 4. Movement of the malleus causes movement of the incus and stapes. 5. Distortion of the basilar membrane forces the hair cells of the organ of Corti toward or away from the tectorial membrane. 6. Movement of the oval window establishes pressure waves in the perilymph of the vestibular duct. The proper sequence for these steps is:___________.A. 2,4,1,6,5,3B. 2,4,6,3,5,1 C. 2,1,4,6,5,3D. 2,4,6,1,5,3E. 2,5,4,6,1,3
Answer:
The correct answer is option D, that is, 2,4,6,1,5,3.
Explanation:
With the approaching of sound waves, ear pinna mediates it towards the external auditory canal, this makes sound waves to reach the tympanic membrane. This results in the vibration of the tympanic membrane, and as the malleus, that is, the first ear ossicle, which is attached to the tympanic membrane gets displaced.
This movement of the malleus further moves the stapes and the incus. As the footplate of the stapes is associated with the oval window, the movement of the oval window takes place. This movement of the oval window creates pressure waves in the vestibular duct's perilymph. The movement of these pressure waves takes place from the Oval window to the Round window.
At the time of this movement, the pressure wave distorts the basilar membrane on its path to the round window, resulting in the vibration of the basilar membrane and the hair cells situated in the membrane against the tectorial membrane.
The stimulation of the sensory neurons takes place in the vestibulocochlear nerve's cochlear branch due to the displacement of the stereocilia. Post this, information reaches the auditory cortex in the temporal lobe's superior temporal gyrus, and hearing takes place.
Option D is the one that shows the correct sequence of steps in an auditory sensation. In this case, the sequence is 2,4,6,1,5 and 3.
We can arrive at this answer because:
At the beginning of auditory sensation, the pinna turns to the external acoustic meatus, directing the sound waves to the tympanic membrane.These waves provoke an intense vibration in the tipanic membrane, which provokes the displacement of the malleus.The displacement of the malleus causes a movement that also displaces the stapes, the incus, and the oval window.The movement of the oval window causes other waves that press against the round window.This causes the basilar membrane and hair cells to vibrate, causing stimulation of sensory neurons.At that point, auditory information reaches the auditory cortex in the temporal lobe, allowing hearing to take place.
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explain absorption of food
Key Points
Digested food is able to pass into the blood vessels in the wall of the small intestine through the process of diffusion.
The inner wall, or mucosa, of the small intestine is covered in wrinkles or folds called plicae circulares that project microscopic finger-like pieces of tissue called villi, which in turn have finger-like projections known as microvilli.
The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients.
Each villus transports nutrients to a network of capillaries and fine lymphatic vessels called lacteals close to its surface.
Key Terms
villi: Tiny, finger-like projections that protrude from the epithelial lining of the intestinal wall.
plicae circulares: These circular folds (known as the valves of Kerckring or the valvulae conniventes) are large, valvular flaps that project into the lumen of the bowel.
diffusion: The act of diffusing or dispersing something, or the property of being diffused or dispersed; dispersion.The Small Intestine
The small intestine is the part of the gastrointestinal tract between the stomach and the large intestine where much of the digestion of food takes place. The primary function of the small intestine is the absorption of nutrients and minerals found in food.Digested nutrients pass into the blood vessels in the wall of the intestine through a process of diffusion. The inner wall, or mucosa, of the small intestine is lined with simple columnar epithelial tissue.
Structurally, the mucosa is covered in wrinkles or folds called plicae circulares—these are permanent features in the wall of the organ. They are distinct from the rugae, which are non-permanent features that allow for distention and contraction.
From the plicae circulares project microscopic finger-like pieces of tissue called villi (Latin for shaggy hair). The individual epithelial cells also have finger-like projections known as microvilli. The function of the plicae circulares, the villi, and the microvilli is to increase the amount of surface area available for the absorption of nutrients.
Each villus has a network of capillaries and fine lymphatic vessels called lacteals close to its surface. The epithelial cells of the villi transport nutrients from the lumen of the intestine into these capillaries ( amino acids and carbohydrates) and lacteals (lipids).
The absorbed substances are transported via the blood vessels to different organs of the body where they are used to build complex substances, such as the proteins required by our body. The food that remains undigested and unabsorbed passes into the large intestine.
