Thermoregulation

Question 1

What does endothermic mean?

Answer 1

It means the organism can control their own temperature through homeostasis

Question 2

Define the term thermoregulation

Answer 2

Maintenance of body temperatures within a range that enables cells to function effectively

Question 3

What mechanisms does the body use to increase heat loss?

Answer 3

Dilation of skin blood vessels, sweat glands produce perspiration

Question 4

Describe one behavioural adaptation for increasing heat loss

Answer 4

Sit in the shade, put of the sun

Question 5

What mechanisms are used by the body to reduce heat loss and increase temperature?

Answer 5

Skin blood vessels constrict, skeletal muscle will contract rapidly (shivering), smooth muscles around the hair follicles will contract, causing goose bumps

Question 6

Why is it important for the human body to maintain a stable internal body temperature?

Answer 6

To allow for the enzymes to work effectively. Too cold will slow them down, too hot will cause for them to denature

Question 7

What is the purpose of sweating and how does it achieve its effect?

Answer 7

Evaporation of water from skin. This will absorb any energy/heat.