Multiple choice

Shivering in severe cold is caused by

  1. voluntary action of striated muscles

  2. voluntary action of unstriated muscles

  3. involuntary action of striated muscles

  4. involuntary action of unstriated muscles
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Shivering is an involuntary thermoregulatory response where skeletal muscles (striated muscles) undergo rapid, rhythmic contractions. This generates heat through muscle metabolism and helps maintain body temperature in cold conditions.

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