PHYSIOLOGY
MUSCLE CONTRACTION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is true about cardiac muscles
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They are found in the heart and voluntary
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They are found in the heart and autorhythmic
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They are found in the heart and stomach, and are autorhythmic
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None of the above
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Explanation:
Detailed explanation-1: -Cardiac muscle makes up the thick middle layer of the heart and is surrounded by a thin outer layer called the epicardium or visceral pericardium and an inner endocardium.
Detailed explanation-2: -Why do the cardiac muscles cells demonstrate autorhythmicity? Without a true resting potential, there is a slow influx of sodium ions through slow channels that produces a prepotential that gradually reaches threshold.
There is 1 question to complete.