2.2:8 Minerals and trace elements

Question 1

What is the energy balance mainly regulated by?

Answer 1

Control of food intake affected by:
hunger and appetite 
appetite
satiation
satiety

Question 2

What region of the brain controls food intake?

Answer 2

Hypothalamus

Question 3

What is the role of the arcuate nucleus (ARC0 in the hypothalamus?

Answer 3

Integration of appetite signals

Question 4

IS the ARC region of the brain protected by the BBB and what are the consequences of this?

Answer 4

No, therefore, allows hut hormones to pass into the brain

Question 5

What peptides activate orexigenic neurons to stimulate food intake?

Answer 5

NYP

AgRP

Question 6

What peptides activate Anorexigenic neurons to inhibit food intake?

Answer 6

POMC

CART

Question 7

When POMC undergoes posttranslational modifications what does ot generate?

Answer 7

Melanocortins which act on melanocortin receptors

Question 8

Where is leptin released from and does it inhibit or stimulate food intake?

Answer 8

Adipose tissues and inhibits food intake

Question 9

When is PYY released and does it inhibit or stimulate food intake?

Answer 9

Released on eating food and inhibits food intake

Can also act on the pancreas to stimulate insulin which an also inhibit food intake

Question 10

What does CCK act on and does it inhibit or stimulate food intake?

Answer 10

Acts on the hypothalamus and vagus nerve and inhibits food intake

Question 11

Where is ghrelin released from and does it inhibit or stimulate food intake?

Answer 11

Released from the GIT and stimulates food intake

Question 12

what does PYY act on?

Answer 12

NPY Y2 receptor