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MDCAT Biology QUESTION #7766
Question 1

Which characteristic does NOT apply to smooth muscle?

  • Controlled by autonomic nervous system
  • Spindle-shaped cells
  • Lines the wall of the heart✔️
  • Lack striations
Correct Answer Explanation

Smooth muscle lines walls of hollow organs (blood vessels, intestines, bladder). Cardiac muscle lines the heart wall. Smooth muscle lacks striations, is involuntary, and cells are spindle-shaped.