Thermoregulation

Question 1

Vasodilation

Answer 1

Capillaries widen near the surface of the skin more blood flows near the surface of the skin and less blood flows through the shunt valve, causing increased thermal energy loss/ energy loss by radiation, cooling the body down

Question 2

Sweating

Answer 2

Sweat released onto the skin is evaporated, transferring thermal energy

Question 3

Vasoconstriction

Answer 3

Capillaries constrict near the surface of the skin less blood flows near the surface of the skin and more blood flows through the shunt valve, minimising thermal energy loss/ energy loss by radiation

Question 4

Shivering

Answer 4

Uncontrolled Muscle contraction, releasing heat energy

Question 5

Piloerection

Answer 5

Erector muscles contract, causing the hairs to stand on end, trapping body temperature air

Question 6

Where is the thermal regulatory centre located?

Answer 6

Hypothalamus

Question 7

Temperature receptors

Answer 7

-temperature receptors monitoring blood temperature
-skin receptors send signals to the hypothalamus

Question 8

Thermoregulation

Answer 8

Controls internal body temperature (37°) so enzymes work optimumly