Maintaining body temperature

Question 1

What part of the brain monitors body temperature?

Answer 1

Hypothalamus

Question 2

How does the hypothalamus monitor body temperature?

Answer 2

Because it contains receptors that are sensitive to blood temperature
But the skin also contains temperature receptors that send electrical impulses to this part of the brain

Question 3

2 ways the body responds to increased heat temperature

Answer 3

Sweating
Vasodilation

Question 4

Sweating

Answer 4

Sweat glands release sweat on skin surface
Which is evaporated off this cooling the body down

Question 5

Vasolidation

Answer 5

Capillaries in skin surface widen
So more blood travels through
And so heat transfers out the blood out on the skin surface

Question 6

3 ways the body cools down

Answer 6

Vasoconstriction
Shivering
Stop sweating

Question 7

Vasoconstriction

Answer 7

Capillaries constrict and become more narrow
So less blood runs through
Therefore less what from the blood is transferred from the skin surface

Question 8

Shivering

Answer 8

Skeletal muscles begin contracting
Which requires energy so the muscle cells begin respiring more
So heat released

Question 9

Stop sweating

Answer 9

Electrical impulses sent to glands
So sweat isn’t released on surface of the skin