Thermoregulation Flashcards Preview

Biology Units 1 & 2 Study > Thermoregulation > Flashcards

Flashcards in Thermoregulation Deck (7)
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1
Q

What does endothermic mean?

A

It means the organism can control their own temperature through homeostasis

2
Q

Define the term thermoregulation

A

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

3
Q

What mechanisms does the body use to increase heat loss?

A

Dilation of skin blood vessels, sweat glands produce perspiration

4
Q

Describe one behavioural adaptation for increasing heat loss

A

Sit in the shade, put of the sun

5
Q

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

A

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

6
Q

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

A

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

7
Q

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

A

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