One difference between cardiac muscle and skeletal muscle is that:
a. cardiac muscle cells are arranged in branching networks.
b. skeletal muscle cells have only one nucle-us.
c. cardiac muscle cells appear striped.
d. skeletal muscle cells contain sarcomeres.
ANS: A
Cardiac cells are arranged in branching networks throughout the myocardium, whereas skeletal muscle cells tend to be arranged in parallel units throughout the length of the muscle. Cardiac muscle cells have only one nucleus, whereas skeletal muscle cells have many nuclei. Both cardiac and muscle cells appear striped and contain sarcomeres.
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