Homeostasis Key Terms

Question 1

Ectotherm

Answer 1

‘Outside heat’

An animal that uses their surroundings to warm their bodies

Question 2

Endotherm

Answer 2

‘Inside heat’

An animal that relies on its metabolic processes to warm up

Question 3

Thermoregulation

Answer 3

The maintenance of a relatively constant core body temperature to maintain optimum enzyme activity

Question 4

Hypothalamus

Answer 4

Control system which controls the pituitary gland and regulates the endocrine system

Question 5

Vasodilation

Answer 5

Arterioles near the surface of the skin dilate when temperature rises

The arteriovenous shunt vessels constrict

Question 6

Vasoconstriction

Answer 6

Arterioles near the surface of the skin constrict

The arteriovenous shunt vessels dilate

Question 7

What are the arteriovenous shunt vessels?

Answer 7

Vessels that provide a direct connection between the arterioles and venules

Question 8

Negative feedback

Answer 8

A system which works to reverse the initial stimulus by restoring conditions to their base level