skip to main content

Thermoregulation Set Point 37°C — FRCA Primary MCQ

Instant feedback + full explanation. One question, done properly.

EasyPhysiology - NeurophysiologyThermoregulation Set Point 37°CFRCA Primary

Regarding temperature regulation the hypothalamus controls thermoregulation. The set point temperature is approximately:

Educational content. Not a substitute for clinical judgement or local policy.

Reveal the answer and explanation

Correct answer: B — 37.0°C

The hypothalamic set point for core temperature is approximately 37.0°C. The anterior hypothalamus controls heat loss (vasodilation / sweating). The posterior hypothalamus controls heat conservation and generation (vasoconstriction / shivering / non-shivering thermogenesis). General anaesthesia inhibits thermoregulation widening the interthreshold range (the range between sweating and vasoconstriction thresholds).

Reference: Power Kam 2018 Principles of Physiology for the Anaesthetist