MEDICAL
HEART AND PERICARDIUM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Conductive Fiber
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Contractile Fiber
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Either A or B
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None of the above
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Detailed explanation-1: -The Purkinje fibers are branches of specialized nerve cells. They send electrical signals very quickly to your right and left heart ventricles. Your Purkinje fibers are in the subendocardial surface of your ventricle walls.
Detailed explanation-2: -This group of muscle cells is called the cardiac conduction system. The main parts of the system are the SA node, AV node, bundle of HIS, bundle branches, and Purkinje fibers.
Detailed explanation-3: -Each time the sinus node generates a new electrical impulse, that impulse spreads out through the heart’s upper chambers, called the right atrium and the left atrium. This electrical impulse, as it spreads across the two atria, stimulates them to contract, pumping blood into the right and left ventricles.