Control Of Appetite

Question 1

What is the action of Ghrelin?

Answer 1

Stimulates excitatory primary neurones => stimulate hunger

Released when stomach is empty

Question 2

What is the action of PYY?

Answer 2

Inhibits excitatory neurones and stimulates inhibitory neurones => suppress hunger

Released by ileum and colon

Question 3

What is the action of leptin?

Answer 3

Stimulates inhibitory neurones and inhibits excitatory neurones => suppresses appetite
Induced expression of uncoupling proteins in mitochondria

Released by adipocytes

Question 4

What is the action of amylin?

Answer 4

Suppresses appetite
Decreases glucagon secretion
Slows gastric emptying