Which body system is directly responsible for initiating shivering?
Correct answer: C. Nervous system
- A. Respiratory system
- B. Circulatory system
- C. Nervous system
- D. Digestive system
Explanation
Shivering is started by the hypothalamus, which detects a fall in body temperature and sends nerve impulses that make skeletal muscles contract rapidly and release heat. The circulatory system distributes that heat and the respiratory system exchanges gases, but neither initiates the response.
This question appeared on the UHS MDCAT 2026 paper, which you can sit online with every answer explained.
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About Thermoregulation
Thermoregulation maintains body temperature through negative feedback controlled mainly by the hypothalamus. It covers vasodilation and vasoconstriction, sweating, shivering, changes in metabolic heat production and behavioural responses, while distinguishing heat loss by radiation, conduction, convection and evaporation from temperature regulation itself.
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