Name and explain each lymph organ.

Explanation:

What are the organs of the immune system?

Publication Details

Our immune system is made up of both individual cells and proteins as well as entire organs and organ systems. The organs of the immune system include skin and mucous membranes, and the organs of the lymphatic system too.

Organs that function as barriers

Your skin and mucous membranes are the first line of defense against germs entering from outside the body. They act as a physical barrier with support from the following:

Antibacterial substances can kill germs right from the start. A certain enzyme found in saliva, the airways and tear fluid destroys the cell walls of bacteria.

Mucus in the bronchi helps trap many of the germs we breathe in so they can be moved out of the airways by hair-like structures called cilia.

Stomach acid stops most of the germs that enter the body in the food we eat.

Harmless bacteria on our skin and many of the mucous membranes in our body also act as part of the immune system.

In addition, the reflexes that cause us to cough and sneeze help to free our airways of germs.

Illustration: The parts of the immune system

The parts of the immune system

Lymphoid organs

The lymphatic system is composed of:

Primary lymphoid organs: These organs include the bone marrow and the thymus. They create special immune system cells called lymphocytes.

Secondary lymphoid organs: These organs include the lymph nodes, the spleen, the tonsils and certain tissue in various mucous membrane layers in the body (for instance in the bowel). It is in these organs where the cells of the immune system do their actual job of fighting off germs and foreign substances.

Bone marrow

Bone marrow is a sponge-like tissue found inside the bones. That is where most immune system cells are produced and then also multiply. These cells move to other organs and tissues through the blood. At birth, many bones contain red bone marrow, which actively creates immune system cells. Over the course of our life, more and more red bone marrow turns into fatty tissue. In adulthood, only a few of our bones still contain red bone marrow, including the ribs, breastbone and the pelvis.

Thymus

The thymus is located behind the breastbone above the heart. This gland-like organ reaches full maturity only in children, and is then slowly transformed to fatty tissue. Special types of immune system cells called thymus cell lymphocytes (T cells) mature in the thymus. Among other tasks, these cells coordinate the processes of the innate and adaptive immune systems. T cells move through the body and constantly monitor the surfaces of all cells for changes.

Lymph nodes

Lymph nodes are small bean-shaped tissues found along the lymphatic vessels. The lymph nodes act as filters. Various immune system cells trap germs in the lymph nodes and activate the creation of special antibodies in the blood. Swollen or painful lymph nodes are a sign that the immune system is active, for example to fight an infection.

Spleen

The spleen is located in the left upper abdomen, beneath the diaphragm, and is responsible for different kinds of jobs:

It stores various immune system cells. When needed, they move through the blood to other organs. Scavenger cells (phagocytes) in the spleen act as a filter for germs that get into the bloodstream.

It breaks down red blood cells (erythrocytes).

It stores and breaks down platelets (thrombocytes), which are responsible for the clotting of blood, among other things.

There is always a lot of blood flowing through the spleen tissue. At the same time this tissue is very soft. In the event of severe injury, for example in an accident, the spleen may rupture easily. Surgery is then usually necessary because otherwise there is a danger of bleeding to death. If the spleen needs to be removed completely, other immune system organs can carry out its roles.

The human body organ known as the pancreas secretes the hormones insulin and glucagon. These hormones regulate the level
of glucose in the bloodstream. If the level of glucose is too low, the pancreas secretes glucagon which causes the glucose level
to increase; if the glucose level is too high, the hormone insulin will lower the glucose level.
What name is given to this type of regulatory system?
A)
endocytosis
B)
homeostasis
meiosis
D)
symbiosis

1. what is carrying capacity?

2. What are the variables in carrying capacity?

3. What is a sustainable food source?

4. What is a lasting food source?

5. Why is it important to control the species population?​

Will give brainliest

PLEASE HELP ASAP

A population of fish has a carrying capacity of 2,200 fish, with a maximum rate of increase of 1.0 per individual per year. Using the logistic population growth model, what is the approximate population growth rate for a population of 1,580 fish?

259 fish per year
360 fish per year
445 fish per year
863 fish per year

Why do cells need to carry out
cellular respiration?
A. to obtain water
B. to release the energy in food
C. to make copies of itself

Alice wanted to see if a new premium gasoline would give her more kilometres per litre. She filled her car with the new gasoline and went on a long trip. When she calculated her mileage, she discovered that she has gone 40 kilometres further on this tank of gas than she went on a tank of regular gas when she was driving around town as usual. She decided to buy the premium gas from then on to get better mileage. What are the errors in this experiment?

diagram represent the generalized animal cell​

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The spongy layer____


A.) can't do photosynthesis

B.) is the outermost layer

C.) has no chloroplasts

D.) contains stomata

Explain how genetic modifications impact crop yield. How will this help feed the world in 2050?

Match each graph with its correlation coefficient.
+1.0
+0.85
+0.15
-0.50
-1.0

substances which are harmful to our environment is called?​

please help ill give brainliest! its science i need to know the answer

The pH of a solution is a measure of how acidic or basic it is. The greater the pH, the more basic the solution is. Corals and other marine invertebrates require less energy to make their exoskeletons and shells when ocean water is slightly basic. As carbon dioxide concentrations in Earth’s atmosphere rise, ocean water absorbs carbon dioxide and becomes more acidic. This process is called ocean acidification. How do you think ocean acidification will affect the coral reef?

Which statement is incorrect about the adult human heart?


Question 28 options:


Blood in the right ventricle is deoxygenated.



Blood in the left ventricle is deoxygenated.



Blood in the pulmonary artery is deoxygenated.



Blood in the pulmonary vein is oxygenated.



Answer not listed

What is carrying capacity?

Identify 3 characteristics that plants share with algae.

Easy question about plant water loss?

which of the following is correct about cells?

Aerobic respiration requires this molecule, but Lactic Acid fermentation does not.
Carbon Dioxide
Glucose
Ethanol
Oxygen

You are replicating Gregor Mendel’s famous experiment with sweet peas.
The genotype for dominant smooth-seeded parent is designated AA, while
the genotype for the wrinkled-seeded parent is aa. Using a punnet square
predict the first generation for this cross. What are the genotypic and
phenotypic ratios? SHOW ALL WORK.

I WILL GIVE BRAINLEST ANSWER IF SOMEONE COULD SOLVE THIS OUT FOR ME PLEASE I NEED IT ASAP!!!! DUE IN 30 MINS!!!!!!!!

Please help ;(
question and answer options in photo
zoom in if needed
Thank You :D​

*PLEASE HELP*
Which of the following best describes the role of the nervous system?

A. responds to all internal and external stimuli

B. detects only stimuli from outside an organism

C. responds only to stimuli occurring inside an organism

D. detects internal and external stimuli at the cellular level

Which of the following mechanisms is the correct sequence of events that takes place during the plant responses to internal and external signals?
A) transduction, reception, and response
B) reception and transduction
C) reception, transduction, and response
D) reception and response

Drag the tiles to the correct boxes to complete the pairs. Identify the types of inheritance based on the expression of alleles in the organism. dominant recessive multiple presence of many alleles for the trait to be expressed  presence of two alleles for the trait to be expressed  presence of a single allele for the trait to be expressed ​

Consumers in the reef can be further classified as filter feeders, or organisms that eat plankton by filtering water; grazers, or organisms that feed on organisms that don’t move; and predators, or organisms that eat other animals. List at least one example of each.

Filter Feeders -
Gazers -
Predators -

Look at image please

2- Clasifica los siguientes sistemas en abierto, cerrado o aislado:

a. una cazata de helado c. una lata de arvejas e. un vaso con jugo

b. una bolsa de 1kg de arroz sin abrir d. un termómetro f. un perro

3- Clasifica los siguientes sistemas en homogéneo y heterogéneo e indica el número de fases:

a. limonada con hielo c. agua y aceite e. agua gasificada

b. agua y acetona d. tierra, arena y piedras f. café con leche

4- En un laboratorio se realiza un experimento para estudiar la flotabilidad de cuerpos

en el agua.

a. Indica qué partes componen el sistema y cuál es el ambiente.

b. Clasifica el sistema como abierto, cerrado o aislado.

c. ¿En qué estado físico está cada componente del sistema?

d. ¿Cuántas fases tiene?

e. ¿Es homogéneo o heterogéneo?

5- El recipiente de la imagen tiene agua coloreada y está tapado.

a. Identifica qué partes componen el sistema.

b. Clasifica el sistema en abierto, cerrado o aislado.

c. ¿El sistema es homogéneo o heterogéneo?

d. Si enfriamos el recipiente hasta obtener hielo,

¿cambiará la masa del sistema? Justifica

6- Se está estudiando la vida de los peces en una pecera que se encuentra encima de una mesa en el laboratorio.

a. Dibuje lo descrito arriba y señale cuál es el sistema, el límite y cuál es el ambiente.

b. Clasifique el sistema según la interacción con el ambiente, justificando su respuesta.

c. ¿Es homogéneo o heterogéneo?

Land from which water runs off into streams is known as a


1 watershed
2 divide
3 channel

difference between blood and lymph​

All of Earth's biomes considered together represent:
A. population
B. community
C. biosphere
D. ecosystem