Thermoregulation

Question 0

Low temperature causes

Answer 0

Hypothermia

Question 1

High temperature causes

Answer 1

Dehydration and heat stroke

Question 2

Describe the process of how your brain monitors the body’s temperature

Answer 2

If too hot/ cold the brain sends nerve impulses to the skin, which after increases or decreases heat loss from the body’s surface

Question 3

3 ways the body increases / decreases body temperature

Answer 3

1. Hairs on skin trap more warm air when standing up and less when lying flat
2. If the body is too hot glands under skin secrete sweat onto surface of skin to increase heat loss by evaporation
3. Vasodilation causes more heat to be carried by the blood to the skin, where it can be lost to air.

Question 4

What is vasodilation

Answer 4

Blood vessels supplying blood to the skin can swell or dilate

Question 5

Vasoconstriction

Answer 5

Blood vessels shrink down again

Question 6

Vasoconstriction reduces?

Answer 6

Heat loss through the skin once the body’s temperature has returned to normal