Which of the following structures does NOT contain smooth muscle?

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Multiple Choice

Which of the following structures does NOT contain smooth muscle?

Explanation:
Smooth muscle is found in the walls of hollow organs where it can contract involuntarily to move contents or regulate flow. Structures like the gastrointestinal tract, blood vessels, and the urinary system all rely on this smooth muscle in their walls. The skeletal system, however, consists of bones and joints and does not contain smooth muscle tissue; the muscles associated with the skeleton are skeletal muscles, which are voluntary and striated. Therefore, the structure that does not contain smooth muscle is the skeletal system.

Smooth muscle is found in the walls of hollow organs where it can contract involuntarily to move contents or regulate flow. Structures like the gastrointestinal tract, blood vessels, and the urinary system all rely on this smooth muscle in their walls. The skeletal system, however, consists of bones and joints and does not contain smooth muscle tissue; the muscles associated with the skeleton are skeletal muscles, which are voluntary and striated. Therefore, the structure that does not contain smooth muscle is the skeletal system.

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