Question

Which of the following statements accurately defines Purkinje fibers? Superficial, strap-like muscle on the posterior of...

Which of the following statements accurately defines Purkinje fibers?

Superficial, strap-like muscle on the posterior of the heart

Specialized muscle fibers in the ventricular walls that conduct electrical impulses

Located in the lower right atrium

Both A and C are correct
Science   Anatomy-And-Physiology   
0 0
Add a commentTranscribed image text
Next >

Homework Answers

Answer #1

Answer - specialised muscle fibres in the ventricular walls that conduct electrical impulses.

It is a component of conduction pathway of heart, which includes SA node, AV node, bundle of his and purkinje fibres.

These fibres are located in the inner (not superficial) ventricular walls. Purkinje fibres conduct the electrical impulses whose source is AV node to the muscles of ventricles. As the the electrical signal reaches to the ventricular musculature, it contracts.

0 0
Know the answer?
Your Answer:

Post as a guest

Your Name:

What's your source?

Earn Coins

Coins can be redeemed for fabulous gifts.

Log In

Sign Up

Not the answer you're looking for?
Ask your own homework help question
Similar Questions
12. Which of the following statements accurately defines H zone? A) Muscles of the anterior forearm...
12. Which of the following statements accurately defines H zone? A) Muscles of the anterior forearm B) Large, deep muscle composed of two parts in the pelvis and proximal thigh C) The lighter region in the midsection of each A band that consists of thick filaments only D) Both A and C are correct
Which of the following statements accurately defines anterior pituitary? A. Secretes hormones that largely affect other...
Which of the following statements accurately defines anterior pituitary? A. Secretes hormones that largely affect other glands B. Stores ADH and oxytocin produced by the hypothalamus C. Anterior portion of the pituitary gland D. Both A and C are correct
Which of the following statements about the internal structure of the heart is/are correct? A. The...
Which of the following statements about the internal structure of the heart is/are correct? A. The mitral valve is a bicuspid valve. B. The mitral valve is located between the left atrium and the left ventricle. C. The aortic valve is one of the semilunar valves. D. The tricuspid valve is located between the vena cavae and the right atrium. E. A, B, and C are correct.
1. The layer of the heart that is composed mainly of cardiac muscle and forms the...
1. The layer of the heart that is composed mainly of cardiac muscle and forms the bulk of the      heart is the a. endocardium                      b. myocardium                    c. pericardium 2. The chamber of the heart that sends blood to the systemic circulation is the a. left atrium              b. right ventricle         ...
Choose the letter that best completes the statement or answers the question 1. The layer of...
Choose the letter that best completes the statement or answers the question 1. The layer of the heart that is composed mainly of cardiac muscle and forms the bulk of the heart is the a. endocardium b. myocardium c. pericardium 2. The chamber of the heart that sends blood to the systemic circulation is the a. left atrium b. right ventricle c. left ventricle d right atrium 3. Choose the correct track of pulmonary circuit going to the systemic circuits:...
Which is the following is an example of compartmentation at the intracellular level? Group of answer...
Which is the following is an example of compartmentation at the intracellular level? Group of answer choices Skeletal muscle cells have organelles called sarcoplasmic reticulum (SR) that contain large stores of calcium ions. The calcium is released during muscle contraction and then pumped back into the SR as the muscle relaxes. The heart is divided into four chambers, with two upper chambers that receive incoming blood and two lower, more muscular chambers that send blood out into the circulation. Regions...
Which of the following statements about the circulatory system is/are correct? A. The pulmonary circulatory system...
Which of the following statements about the circulatory system is/are correct? A. The pulmonary circulatory system starts in the pulmonary trunk as the blood leaves the right ventricle and ends as the blood flows back into the left atrium. B. The systemic circulatory system begins in the aorta as the blood leaves the left ventricle and ends as the blood returns to the right atrium. C. The pulmonary arteries carry less oxygen than do the pulmonary veins. D. The aorta...
Select all of the CORRECT statements associated with heart physiology. There may be more than one...
Select all of the CORRECT statements associated with heart physiology. There may be more than one answer. (2 pts) Select one or more: a. About ninety-nine percent of the cardiac cells are autorhythmic cells while one percent are contractile           cells. b. High levels of norepinephrine or epinephrine in the atria and the ventricles will increase heart rate and stroke volume. c. Muscarinic receptors are in the atria and the ventricles. d. Norepinephrine is secreted by both sympathetic pre-ganglionic and...
Question 1) Which of the following is a correct statement? Group of answer choices A) The...
Question 1) Which of the following is a correct statement? Group of answer choices A) The A band of a sarcomere appears light in color when viewed under a microscope B) The tropomyosin protein contains 3 subunits: one that binds to myosin, one that binds to actin and one that binds to ATP C) During the power stroke of skeletal muscle contraction, ADP and Pi are released as the hinge region of the myosin head undergoes a conformational change, resulting...
24. Which of the following statements is true of the lymphatic system?        A function...
24. Which of the following statements is true of the lymphatic system?        A function of the lymph nodes is to assist in activation of the immune system.        The pancreas is a lymphatic gland.        The lymphatic system assists the cardiovascular system in oxygen delivery.        The lymph nodes contain a high concentration of erythrocytes. 26. Embryonic develop consists of the three germ layers forming and ultimately developing into all of the organs of the...
ADVERTISEMENT
Need Online Homework Help?

Get Answers For Free
Most questions answered within 1 hours.

Ask a Question
ADVERTISEMENT