B17d Control of body temperature (triple only)

Question 1

Name the area of the brain which monitors and controls body temperature

Answer 1

Thermoregulatory centre

Question 2

Give 2 places where temperature receptors are found

Answer 2

Skin

Thermoregulatory centre in the brain

Question 3

Explain how body temperature is reduced if it rises too high

Answer 3

Blood vessels in the skin dilate (vasodilation)
More blood travels to skin surface
Sweat is produced by sweat glands
Cause energy to be released from the body to the environment

Question 4

Explain how the body responds if the body temperature decreases

Answer 4

Blood vessels constrict (vasoconstriction)
Les blood travels to the skin surface
Sweating stops
Skeletal muscles contract (shiver)

Question 5

How is information sent from the skin temperature receptors to the brain?

Answer 5

Electrical impulses