Homeostasis

Question 1

Definition of homeostasis

Answer 1

It is the maintenance of a constant internal environment

Question 2

Changes in the human body when temp increases

Answer 2

1. Dilation of arterioles in the skin+constriction of shunt vessels allow more blood to flow through the blood capillaries in the skin—> allowing more heat to be lost through the skin by radiation, conduction and convection
2. Sweat glands become more active, resulting in an increased production of sweat—> more latent heat of vaporisation as more water vapour evaporated from the skin.
3. Decreased metabolic rate.