Hormonal and neural mechanisms

Question 1

Hypothalamus

Answer 1

Responsible for maintaining homeostasis in the body

Question 2

Lateral Hypothalamus

Answer 2

Responsible for feeling hunger

Question 3

Ventro-Medial Hypothalamus

Answer 3

Responsible for satiety

Question 4

Neural process

Answer 4

When blood is low-Liver sends a signal to the lateral hypothalamus causing neurons to fire which cause hunger.When you eat,glucose enters the blood and detected by the ventromedial hypothalamus causing satiety.

Question 5

Ghrelin

Answer 5

Hormone that causes hunger-secreted by stomach into bloodstream.Detected by hypothalamus,creating hunger.When eating,the stomach stops releasing ghrelin,which then stops hunger.

Question 6

Leptin

Answer 6

Hormone that makes you feel full-secreted by fat cells into bloodstream.Detected by hypothalamus,creating the signal that fat stores are full and you do not need to eat.

Question 7

A03-APHAGIA AND HYPERPHAGIA

Answer 7

Aphagia(inability to eat when food is required) caused by damage to LH.
Hyperphagia(inability to stop eating when full)Caused by damage to vmh.

Question 8

A03-Biological determinism

Answer 8

Physiological drives can be overcome e.g dieiting,bulking or inability to get food.

Question 9

A03-Animals and Ghrelin

Answer 9

Studies have found animals who were injected with ghrelin were found to eat more,however these findings cannot be generalized properly to humans.