Locomotion And Movement Question 12

Question: Which of the following would you not expect to find in both a skeletal muscle cell and a cardiac muscle cell?

Options:

A) Actin filaments

B) Myosin binding sites

C) Potassium channels that close slowly after an action potential.

D) Large numbers of mitochondria

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Answer:

Correct Answer: C

Solution:

[c] Only cardiac muscle cells have the unique potassium channels that give this type of muscle its myogenic properties.