Chapter 13: Motivation (Feeding)

Question 1

What is leptin?

Answer 1

A peptide produced by fat cells that regulate appetite

Question 2

Based on lesion studies, where is the “satiety center” of the brain?

Answer 2

The ventromedial hypothalamus (VMH)

Question 3

What are the three phases of insulin release?

Answer 3

Cephalic, digestive, and absorptive

Question 4

Define homeostasis.

Answer 4

The active process of maintaining a physiological parameter constant.

Question 5

Where are anorectic and orexigenic peptides produced?

Answer 5

The arcuate nucleus of the hypothalamus

Question 6

What do anorectic peptides do?

Answer 6

Reduce hunger and food consumption

Question 7

What is an example of an anorectic peptide?

Answer 7

CART

Question 8

What do orexigenic peptides do?

Answer 8

Stimulate hunger, appetite, and increase food consumption

Question 9

What is an example of an orexigenic peptide?

Answer 9

AgRP

Question 10

Why does it take 20 minutes after a meal to feel satiated?

Answer 10

It takes that long for peptide hormones from the periphery to be secreted and affect the arcuate nucleus