Wk 6: Eating & Ingestive Behav.

Question 1

Pathway of food from Stomach…

Answer 1

Duodendum, Small Intestine, Large Intestine

Question 2

CCK

Answer 2

Cholecystokinin: Released once food hits duodendum. Signal to stop eating

Question 3

Glycogen

Answer 3

‘Animal Starch’. Stored in liver and muscle. Constitutes short term store of nutrients.

Question 4

Insulin

Answer 4

Facilitates entry of glucose and amino acids into the cell. Conversion of glucose into glycogen. Transport of fats into adipose tissue.

Question 5

Glucagon

Answer 5

Promotes conversion of liver glycogen into glucose

Question 6

Triglyceride

Answer 6

Form of fat storage in adipose cells; consists of a molecule of glycerol joined with three fatty acids

Question 7

Glycerol

Answer 7

Derived from breakdown of triglycerides along with fatty acids. Can be converted by liver into glucose.

Question 8

Fatty Acid

Answer 8

Derived from breakdown of triglycerides along with glycerol. Can be metabolised by most cells except brain cells.

Question 9

Lateral Hypothalamus lesioning leads to

Answer 9

Refusal of food.

Question 10

Lateral Hypothalamus stimulation leeds to

Answer 10

Eating.

Question 11

Ventromedial Hypothalamus lesioning leads to

Answer 11

Eating.

Question 12

Ventromedial Hypothalamus stimulation leads to

Answer 12

Inhibited eating.

Question 13

Glucostatic Theory of Eating

Answer 13

Low levels of blood glucose are detected by receptors = hunger

Question 14

Lipostatic Theory of Eating

Answer 14

Reduced amounts of lipids/free fatty acids in blood = hunger

Question 15

Aminostatic Theory of Eating

Answer 15

Neuropeptide level, e.g. cholecystokinin (CCK) determines hunger

Question 16

Leptin

Answer 16

Produced by fat cells and signals no need to eat

Question 17

Neuropeptide Y

Answer 17

inhibits Paraventricular Nucleus of the hypothalamus and results in an increase in meal size