Appetite control

Question 1

What is satiation?

Answer 1

The process which develops during eating and brings an episode of eating to a close (during meals)

Question 2

What is satiety?

Answer 2

The state of inhibition over further eating (between meals)

Question 3

What things regulate appetite?

Answer 3

• neurochemicals
• GIT: nutrients, hormones, stomach (stretch receptors)
• reward system
• sensory factors
• fat stores (hormones)

Question 4

What is the main regulator of appetite control?

Answer 4

The hypothalamus

Question 5

What leads to passive overconsumption?

Answer 5

The brain overriding ‘full signals’ (gastric distension is a weak signal)

Desire to eat, rather than hunger, can override this full signal

Question 6

What are the 2 systems for appetite?

Answer 6

1. Feeding system - initiates feeding from lateral hypothalamus
2. Satiety system - stops feeding from ventromedial hypothalamus

Question 7

Serotonin, leptin, insulin, CCK, PYY-1, GLP, AA, glucose - promote or reduce eating?

Answer 7

Reduce eating

Question 8

Galanin, neuropeptide Y, B-endorphin, dynorphin, dopamine, norepinephrine, gherkin - promote or decrease eating?

Answer 8

Promote eating

Question 9

What does neuropeptide Y stimulate?

Answer 9

Stimulates food intake