Question

What is the role of shivering in raising body temperature?

• A. Shivering dilates blood vessels.
• B. Shivering constricts blood vessels.
• C. Shivering increases the heart rate.
• D. Shivering stimulates rapid muscle action.
• E. Shivering tightens skin to cause goose bumps.

Answer 1

The correct option is D Shivering stimulates rapid muscle action.

Shivering is rhythmic skeletal muscle contraction that generates heat by stimulating ATP hydrolysis thereby raising the body temperature during cold conditions. Blood vessel diameter or heat beat is not affected by shivering. Goosebump develops due to contraction of arrector pili (smooth muscles) attached to the hair follicle. Thus, the correct answer is option D.