Answers
Answer:
The question is lacking the options, below is the completely stated question and options:
This is the correct path of an electrical excitation from the pacemaker to a cardiocyte in the left ventricle (LV).
A. sinoatrial (SA) node → atrioventricular (AV) node → atrioventricular (AV) bundle → Purkinje fibers → cardiocyte in LV
B. atrioventricular (AV) node → sinoatrial (SA) node → atrioventricular (AV) bundle → Purkinje fibers → cardiocyte in LV
C. sinoatrial (SA) node → atrioventricular (AV) bundle → atrioventricular (AV) node → Purkinje fibers → cardiocyte in LV
D. atrioventricular (AV) node → Purkinje fibers → atrioventricular (AV) bundle → sinoatrial (SA) node → cardiocyte in LV
E. sinoatrial (SA) node → atrioventricular (AV) node → Purkinje fibers → atrioventricular (AV) bundle → cardiocyte in LV
Answer:
The correct answer is:
sinoatrial (SA) node → atrioventricular (AV) node → atrioventricular (AV) bundle → Purkinje fibers → cardiocyte in LV (A.)
Explanation:
The electrical impulse conduction system of the heart refers to the pathways through which electrical signals pass, to cause excitation of specific paths of the heart, leading to depolarization, which in turn leads to contraction and relaxation of the heart. The correct excitation pathway is as follows:
1. Normal excitation originates in the sinoatrial (SA) node, from which depolarization spreads throughout the atria, causing impulses (excitation) to spread from the SA node to the atria. It is believed that this depolarization spreads to the atrial cells through adjacent myocardial cells and myofibrils.
2. Next, the depolarization from the atria reaches the atrioventricular (AV) node, causing excitation of the AV node. The AV node is located on the floor of the right ventricle, close to the interventricular septum. The excitation leaves this site by two pathways; the fast and slow pathways which vary based on the time of transmission of impulses to the next phase.
3. Next, from the AV node, the excitation is passed to the two branches of the bundle of His, which form a network of fibers known as purkinje fibers, from where excitation passes to the apical region of the left and right ventricles causing depolarization of the ventricular myocardium.
Attached to this answer is a picture to show what the pathway looks like.
The correct path of an electrical excitation from the pacemaker to a cardiomyocyte is:
sinoatrial (SA) node → atrioventricular (AV) node → atrioventricular (AV) bundle → Subendothelial conducting network → cardiomyocyte in LV.
The heart is a cone-shaped hollow muscular organ that possesses the property of generating its own electrical impulses or excitations.
It is divided into four(4) chambers namely the right ventricle, left ventricle, right atrium and left atrium.
The correct path of an electrical excitation is from:
The pacemaker: This is also called the sinoatrial (SA) node. It generates the electrical excitations.Atrioventricular (AV) node: The electrical excitation initiated by SA node is then transmitted to AV node. This transmits the signal from atria to ventricles.Atrioventricular (AV) bundle: These are specialised fibres that originate from the AV node. They are the bundle that divides to form the right and left bundle branches.Subendothelial conducting network: This is also called the Purkinje fibres which is formed within the ventricular myocardium.Cardiomyocyte of the left ventricle: The cardiomyocytes are set of cells that generates contractile force in the heart. These are located at the left ventricle.Therefore, the correct path of an electrical excitation from the pacemaker to a cardiomyocyte is:
sinoatrial (SA) node → atrioventricular (AV) node → atrioventricular (AV) bundle → Subendothelial conducting network → cardiomyocyte in LV.
Learn more about pacemaker here:
https://brainly.com/question/10393409
Related Questions
12. Cleocin 150 mg 1M every 12 h available: Cleocin 300 mg per 2 mL How may mL are needed for each dose?
Answers
Answer:
1 mL
Explanation:
Available: 300mg/2mL
Needed: 150mg
Equation: 300mg/150mg=2
2mL/2mL=1mL
1. MA Certifying Organizations (List four.)
Answers
American Association of Medical Assistants (AAMA)
American Medical Technologists (AMT)
National Healthcare Association (NHA)
National Center for Competency Testing (NCCT)
Increased heart rate, increased blood pressure, bronchodilation, diaphoresis, and pupillary dilation (mydriasis) are consequences of
Answers
Answer:
Paroxysmal sympathetic hyperactivity.
1. You have received a physician's order to administer 1 mg of a medication to a patient. It is a medication that is injected into the muscle. As soon as you have given the medication, you realize
you measured 1 mL instead of calculating 1 mg. What would you do?
Answers
Answer:
Check the prescription on the bottle, monitor the patient for s/s of adverse reactions, monitor site, check vitals, call the doctor and inform them of the medication error
Explanation:
1 mL of medication can be 10 mg of the medication, hence you've overdosed the patient. 1 mL of medication can also be 1 mg of the medication. It depends on the concentration. ex. the medication can read 10mg/1mL, in this case you would give 0.1 mL
When clamping the umbilical cord, the clamp closest to the baby should be approximately ________ inch(es) from the infant's body.
Answers
Answer:
The correct answer is - 7 to 10 inches.
Explanation:
The infant and placenta of the mother is connected with the umbilical cord which is need to be cut to separate the infant from placenta. Umbilical cord carries important nutrients and blood to the infant from the mother.
Clamping the umbilical cord is oldest technique which is necessary to separate the baby from the placenta. The closest clamp should be approximately 7 inches to maximum of 10 inches to the body of infant.
Thus, the correct answer is - 7 to 10 inches.
Albuterol is a selective beta-2 adrenergic agonist. The intended beta-2 adrenergic effect is ____________. The undesirable effect of beta-1 adrenergic stimulation is ____________.
Answers
Answer:
1. vasodilation
2. vasoconstriction
Explanation:
The intended beta-2 adrenergic effect is bronchodilation. The undesirable effect of beta-1 adrenergic stimulation is rapid heart rate.
What is an adrenergic agonist?An adrenergic agonist is a specific medication that mimics the normal state of the sympathetic nervous system.
Albuterol is a drug used as an adrenergic agonist that stimulates certain receptors.In conclusion, the intended beta-2 adrenergic effect is bronchodilation. The undesirable effect of beta-1 adrenergic stimulation is rapid heart rate.
Learn more in:
https://brainly.com/question/23965911
#SPJ2
The most
common cause
of sexual
ambiguity
is
Answers
Stress is a major health issue for emerging adults, but only _____% indicate that they are doing well in managing stress.
Answers
Answer:
43%
Explanation:
Stress is the major health issue now theses days. Almost all people are suffering from stress. This is a serious issue for mental health well being. In U.S the most affected people from stress are between the age of 30 to 49. Children are less stressed. Most people are stressed due to their workload in their company. Most employee agree that their boss are ,most responsible for their stressed out. Stress is the big issue now these days all over world. Old age people are stressed because of loneliness. Stressed later on changed in depression and other psychological condition. Only 43% people are their in U.S who are able to manage stressful situation and manage their mental health.
Body weight, body fat, inflammatory proteins, and blood pressure drop when people cut back on their usual energy intake by ____ percent.
Answers
Answer:
10-20%
Explanation:
Body weight, body fat, inflammatory proteins, and blood pressure drop when people cut back on their usual energy intake by 10 to 20 percent.
This is because excess energy intake results to them being stored in the body for future purposes. They are usually stored as fats which clogs the arteries and results in the heart using more pressure in pumping blood to parts of the body.
The content of total body water in in adult women is *
Answers
Answer:
The content of total body water in adult women is on average 52-55 percent water.
Explanation:
The content of total body water can vary on many factors, including age, health, water intake, weight, and sex.
Answer:
if we talkin knowledge it would be bellow the iq of 16
Explanation:
Atrial fibrillation, rheumatic heart disease, and valvular prosthetics are risk factors for which type of stroke
Answers
Answer: Embolic stroke
Explanation:
Embolic stroke is a form of stroke thqt occurs when a debris or a blood clot travels from one body part and then stays in the narrower brain artery, thereby blocking the flow of blood into the brain.
It should be noted that Atrial fibrillation, rheumatic heart disease, and valvular prosthetics are risk factors for embolic stroke.
Answer:
Embolic
Explanation:
They all potentiate the possibility of a blood clot to form
when does human life begin
Answers
38. A pregnant client experiences persistent severe headaches and unexplained spells of dizziness during training, what should the trainer do?
Answers
Answer:
The coach should immediately stop physical activity and then take your blood pressure.
Explanation:
Many pregnant women tend to suffer from preclampcia, which is high blood pressure during pregnancy, which is very careful since it is risky for the mother and the baby.
High blood pressure in pregnant women can cause detachments of the placenta, interruption of pregnancy or spontaneous abortion.
It is very risky not to perceive these signs or said pathology, those pregnant women who are diagnosed with high blood pressure should do strict rest and monitoring.
Pregnant women bear the weight and physiological conditions of the baby and child. The trainer should immediately halt the training and check for the vitals of the women.
The trainer should do the following:
1. The trainer should immediately stop the training if the woman is experiencing dizziness and persistent severe headaches.
2. The symptoms could indicate the cause of preeclampsia, which is one of the most common complications of pregnancy. It has symptoms of high blood pressure, damage to the organ systems, and dizziness.
3. The trainer should immediately check for the vitals and measure the blood pressure of the pregnant women. The trainer should immediately contact the medical physician for monitoring and checking of the pregnant women.
Thus, the trainer should stop exercising and check the blood pressure.
To know more about pregnancy complications, refer to the following link:
https://brainly.com/question/17021945
The patients states that she had a heart attack 2 years ago What medical term would you document in her PMHx? HINT: expand the abbreviation !
Answers
Answer:
(MI) Myocardial Infarction
Explanation:
Myocardial infarction (MI, heart attack) is produced when the velocity of blood flow decreases in the heart, which can lead to injury of the heart muscle. The symptoms of a heart attack include pressure, tightness or pain in the chest, shortness of breath, anxiety, nausea and vomiting. MI can be prevented by healthy life habits such as plenty of sleep, healthy food habits, and regular exercise. A heart attack should be treated immediately by angioplasty, which is a medical procedure to unblock the arteries that transport blood to the heart.
All employers should have a Violence Prevention Program. Employees should be involved in the program. A barrier to employee involvement is:
Answers
Answer:Fear
Explanation:
Fear of rising up or raising any concerns worried that someone might be upset or feel like they're being targeted,
A potential barrier to employee involvement in a workplace violence prevention program is a lack of communication and engagement from management, which is present in Option A.
What are workplace violence prevention programs?Employee involvement in workplace violence prevention programs is essential to an effective workplace violence prevention program, as workplace violence prevention programs are an important aspect of ensuring employee safety and well-being in the workplace, and these programs aim to identify and mitigate potential risks of violence in the workplace. However, there may be barriers to employee involvement in these programs, as one potential barrier is a lack of communication and engagement from management.
Hence, a lack of communication and engagement from management is a potential barrier, which is present in Option A.
Learn more about workplace violence prevention programs here.
https://brainly.com/question/3385067
#SPJ6
The question is incomplete, complete question is below
All employers should have a Violence Prevention Program. Employees should be involved in the program. A barrier to employee involvement is:
A)lack of communication and engagement from management.
B)encourage in communication and engagement from management.
on a footpad, which layer of skin is the thickest
Answers
Answer:
Stratum corneum is the layer of skin that is the thickest.
Hope this helps! （づ￣3￣）づ╭❤～
Who do you feel were important in the development of medicine? Explain why.
Answers
A co-worker was sanding an object on a belt sander when he slipped. He has an abrasion on his elbow that is about 3 inches long 2 inches wide. The wound bled a little at first but has stopped.What type of bleeding is this most likely to be?
Answers
This question is incomplete because the options are missing; here is the complete question:
A co-worker was sanding an object on a belt sander when he slipped. He has an abrasion on his elbow that is about 3 inches long 2 inches wide. The wound bled a little at first but has stopped. What type of bleeding is this most likely to be?
A. Capillary
B. Venous
C. Arterial
D. Both venous and arterial
The answer to this question is A. Capillary
Explanation:
Capillary bleeding is the least serious bleeding, this occurs in superficial wounds including abrasions, and in most cases, this type of bleed will stop after some minutes without any intervention. Moreover, this bleeding is caused due to the damage of capillaries, which are very small blood vessels.
Capillary bleeding is most likely the bleeding in the co-worker because the injury was mainly superficial and the bleeding stop after some minutes. Also, the blood loss was minimal, which occurs in capillary bleeding but not in arterial or venous bleeding.
Lynn suffers from frequent seizures, and doctors suspect that they might be occurring because of unusually high levels of which neurotransmitter?
Answers
“GABA is the primary inhibitory neurotransmitter, which means it decreases the neuron's action potential. When the action potential drops below a certain level, known as the threshold potential, the neuron will not generate action potentials and thus not excite nearby neurons.”
2. Most office supplies are purchased through a
O mediator.
O seller.
O vendor.
O retailer.
Answers
Answer:
retailer.
Explanation:
hope it's helpful
Culture Refers to the way of life of a group of people
Answers
Answer:
I'm not sure if this was a true or false question but the answer is true
Explanation:
Behaviors, values and beliefs that are passed on generationally is what produces culture
Assuming all blood types are equally common, people with what blood types would have the best and worst odds of finding a donor?
Answers
A nurse wants to become part of a Disaster Medical Assistance Team (DMAT) but is concerned about maintaining licensure in several different states. What statement by the nursing supervisor best addresses these concerns?
Answers
Answer: a. "Deployed DMAT providers are federal employees, so their licenses are good in all 50 states."
Explanation:
Disaster Medical Assistance Teams are teams consisting of professionals and para-professionals in the medical profession who are called upon during matters of National Emergency when medical personnel are needed to respond rapidly to save lives. They therefore deal with events such as terrorist attacks, natural or man-made disasters, disease outbreaks and the like.
They fall under the National Disaster Medical System which operates at a Federal level. As such, DMAT teams are by extension, Federal employees who are licensed to provide help in every state of the Republic so the nurse does not to be concerned about maintaining licensure in several different states.
in the world how many people die every day
Answers
Which of the following body reactions is characteristic of the stress response? Pupils constrict Blood pressure increases Body temperature drops Heart rate decreases
Answers
Answer:
obviously blood pressure increases.
The body's reactions are characteristic of the stress response as Blood pressure increases. Thus the correct option is B.
What are the Characteristics?
Characteristics refer to any feature or trait of any object which provides any information about the concept. These are unique in nature and makes difference from one another.
The body's system for responding to emergencies is the stress response. The stress response involves both physical and mental reactions to the events you experience.
Once you meet a danger that you believe you lack the capacity to support, you experience stress, which is a bodily and psychological reaction. Examples of it include increased breathing and heart rate, elevated blood pressure, sweating, or chills.
Therefore, option B is appropriate.
Learn more about the Stress response, here:
https://brainly.com/question/12084455
#SPJ2
Which answer helps define a developmental disability?
Answers
Answer:
A developmental disability is a neurological or mental illness that occurs in children or adolescents and hinders normal development. Such a disorder can sometimes also be traced in adults, but the chance of successful treatment usually decreases with age.
The symptoms are diverse and there can be different causes. Some conditions are permanent, others are temporary. Sometimes the symptoms arise in response to a shocking experience, in other cases the cause is hereditary factors or a physical illness. Environmental factors must also be monitored, as well as educational factors.
All factors in the development of the child continuously influence each other. For example, children with a physical problem can be affected in their self-esteem and thus have a less social attitude. This elicits a response from the environment, which in turn affects the child's psyche.
What are some of the possible advantages and disadvantages of virtual autopsy’s?
Answers
Answer:
The only advantages of the virtual autopsy are the ability to replay and lack of exposure to pathogens. All of the disadvantages of being virtual vs in person are: lack of being hands-on; seeing, smelling, feeling and even hearing' sometimes even a "taste" in the air. Advantage of in person: Actual cohorts to get feed-back from and to. Advantages of virtual: you can't make a "natural" mistake virtually because it can be corrected. Some would say you can't make a mistake during autopsy, but this is false it can make or break a person's fatal diagnosis whether it be natural cause so many factors involved.
Some of the possible advantages of the virtual autopsy are as follows:
It creates digital and permanent records of the body, making it easier for pathologists and clinicians to communicate with each other.It can prove to be cheaper than conventional autopsies in some cases, with fewer resources needed and simpler to perform.It lowers the risk of contaminating pathologists and other medical personnel.What do you mean by Virtual Autopsy?A virtual autopsy may be defined as a noninvasive technique where non-intrusive human autopsies are performed by using a CT Scanner in order to obtain a detailed view of the body.
Some of the possible disadvantages of the virtual autopsy are as follows:
It is expensive and includes high equipment and technology costs.is new and is not fully accurate and thus may lead to false diagnoses and judgments.It needs skills and training to deduce from the autopsy results. Lack of experience is a disadvantage.Therefore, some of the possible advantages and disadvantages of the virtual autopsy are well described above.
To learn more about Virtual autopsy, refer to the link:
https://brainly.com/question/19361499
#SPJ5
a solution contains 65 mg/ml of sodium pentobarbital. What volume of this drug would be appropriate to administer to a 300 g laboratory rat at dose of 40 mg/kg
Answers
Answer:
0.18 ml would be appropriate
Explanation:
1kg ↔ 1000mgx ↔ 300mg
x = 0.3 kg
therefore; 40 × 0.3 = 12 mg/kg
65 ↔ 1ml12 ↔ y
y = 0.18 ml
The MRI indicated that Mrs. Hoshi had a collection of blood trapped in the tissues of her brain. This condition, which was caused by a head injury, is called a cranial _____.
Answers
Answer:
The correct answer is "hematoma ".
Explanation:
A hematoma seems to be a pool of blood across from a blood vessel, in some kind of a bundle, or perhaps a bone. An epidural hematoma develops whenever blood rises throughout the outermost surface of their skull towards your brain.It generally involves a fractured skull, although generally with a fracture in the skull. One outstanding characteristic is high-pressure bleeding.So that the above is the correct one.
Traditionally, the term _______ was applied to a vehicle with no permanent roof covering or side windows, but today that name is most often used to describe any convertible sports car.
Group of answer choices
Convertible
Coupe
Roadster
Sedan
