physiology topic 2

Question 1

define hormone

Answer 1

a hormone is a secreted molecule that circulates through the body and stimulates specific cells

Question 2

hormone reaches which part of the body

Answer 2

all parts of the body but only target cells have receptors for that hormone

Question 3

what variables shape a hormone’s effect on an animal’s body and behaviour?

Answer 3

• concentration of the hormone in the body
• presence of the hormone receptor in the body
  -response of the cell when receptor binds to the hormone