Smooth muscles are found mainly in the A. Walls of the cardiac muscles
B. Walls of the chest
C. Walls of hollow organs
D. Walls of the lumbar spine

The answer is C>

Explanation:

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Smooth muscle cells are found in the walls of hollow organs, including the stomach, intestines, urinary bladder and uterus, and in the walls of passageways, such as the arteries and veins of the circulatory system, and the tracts of the respiratory, urinary, and reproductive systems.

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