Cardiac muscle cells have several similarities with skeletal muscle cells. Which of the following is not a similarity?

A. The cells are each innervated by a nerve ending.
B. The cells store calcium ions in the sarcoplasmic reticulum.
C. The cells contain sarcomeres.
D. The cells become depolarized when sodium ions enter the cytoplasm.


Answer: A. The cells are each innervated by a nerve ending.

Anatomy & Physiology

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