PHYSIOLOGY
PULMONARY PHYSIOLOGY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Which of the following is a difference between cardiac muscle and skeletal muscle?
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unlike skeletal muscle cells, cardiac muscle cells do not rely on an influx of calcium ions for depolarization
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unlike skeletal muscle, cardiac muscle is not striated
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unlike skeletal muscle, cardiac muscle does not use a sliding filament mechanism for contraction
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unlike most skeletal muscle cells, cardiac muscle cells are involuntary
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Explanation:
Detailed explanation-1: -Cardiac muscle, like skeletal muscle, is made up of sarcomeres that allow for contractility. However, unlike skeletal muscle, cardiac muscle is under involuntary control. The cardiac muscle is responsible for the contractility of the heart and, therefore, the pumping action.
Detailed explanation-2: -Skeletal muscle fibers occur in muscles which are attached to the skeleton. They are striated in appearance and are under voluntary control.
There is 1 question to complete.