Questions: All of the following are true of smooth muscle EXCEPT spindle shaped multinucleated involuntary nonstriated

All of the following are true of smooth muscle EXCEPT spindle shaped multinucleated involuntary nonstriated
Transcript text: All of the following are true of smooth muscle EXCEPT spindle shaped multinucleated involuntary nonstriated
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Solution

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The answer is the second one: multinucleated.

Explanation for each option:

  1. Spindle shaped: This is correct. Smooth muscle cells are spindle-shaped, meaning they are elongated with tapered ends.
  2. Multinucleated: This is incorrect. Smooth muscle cells typically have a single nucleus, not multiple nuclei.
  3. Involuntary: This is correct. Smooth muscle is controlled involuntarily by the autonomic nervous system.
  4. Nonstriated: This is correct. Unlike skeletal and cardiac muscle, smooth muscle does not have striations (bands) when viewed under a microscope.

Summary: Smooth muscle cells are spindle-shaped, involuntary, and nonstriated, but they are not multinucleated.

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