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Select the correct statement about the function of myocardial cells.

Edwindsor

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8 years ago

Select the correct statement about the function of myocardial cells.

Select the correct statement about the function of myocardial cells.
A) Cardiac muscle cells are innervated by sympathetic, parasympathetic, and somatic nerve fibers so that the nervous system can increase heart rate.
B) The entire heart contracts as a unit or it does not contract at all.
C) The refractory period in skeletal muscle is much longer than that in cardiac muscle.
D) The influx of potassium ions from extracellular sources is the initiating event in cardiac muscle contraction.

Textbook

Anatomy & Physiology

Edition: 5^th

Authors: Marieb, Hoehn

Read 320 times

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- Eddy

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ancra

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Edwindsor Author

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8 years ago

How do you do it! You're so smart lol

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- Eddy

ancra

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8 years ago

You're welcome Happy Dummy

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