The hairs on the skin also help to control body temperature. The hairs lie flat when we are warm, and rise when we are cold. If we are too cold, nerve impulses are sent to the hair erector muscles ...

It has many important parts, including: If body temperature increases over this temperature, enzymes will denature and become less effective at catalysing important reactions, such as respiration.

NEARLY ten years ago it was found 1,2 that adrenaline, noradrenaline and 5-hydroxytryptamine (5-HT) are present in relatively high concentrations in that part of the wall of the third ventricle ...

This lesson plan teaches students how the human body self-regulates to maintain a stable internal environment despite changes in the external environment -- a process called homeostasis. Most of the ...

Factors important in radiant heat loss are the surface area and the temperature gradient. Conduction - through direct contact between objects, molecular transference of heat energy Water conducts heat ...