How does the body keep its temperature near 37°C?
Quick Answer
The hypothalamus acts as the body's thermostat by triggering sweating, shivering, and changes in blood flow. Normal core temperature is around 37°C, though it varies slightly through the day.
The Full Story
The body keeps its core temperature stable through thermoregulation, which is controlled mainly by the hypothalamus in the brain. If the body is too hot, blood vessels near the skin widen and sweating helps cool the body by evaporation. If the body is too cold, blood vessels constrict and muscles shiver to generate heat. Hormones and metabolism also help adjust heat production over longer periods. This control system is essential because many enzymes work best only within a narrow temperature range.
Key Facts
YouTube Angle
Suggested video title for this topic:
"How your brain acts like a built-in thermostat"