Question

1) Which gut hormone increases food intake?

a) All answers are correct

B) Ghrelin

c) PYY

D) GLP-1

E) CCK

2) Brattle boro rats drink 10x as much water as normal rates. Why?

a) They have a mutation in the oxytocin receptor gene

b) no answers are correct

c) they prefer saltier foods so must drink more

d) they have an overproduction of ghrelin

e) they congenitally lack ADH

3) There is no endocrine or other biological disorder consistently related to PMS

A) TRUE

B)FALSE

4) Which neurochemical mediates corticosterone action on GABA inhibition and enchanced noradrenaline release

Answer 1

Ans1) b) ghrelin

Expalaination: ghrelin is hunger hormone means it increases apetite or intake of food. It is Secreted by enteroenodocrine cell of GIT.

PYY, GLP-1andCCK are satiety hormone which give satisfaction of fullness and signal of stop eating.

Ans2)e) they congenitally lack ADH.

Brattle boro rats lack ADH or vasopressin hormone cogenitally due to a spontaneous genetic mutation which occur naturally.

As they lack ADH which is responsible for conditional reabsorbtion of water from DCT and collecting duct in nephron tubular part so to compensate water loss occur in urine they drink10x more water than normal rat.

Ans3) false

Explaination :premenstrual syndrome(PMS) is considered a syndrome due to hormonal fluctuation in female especially serotonin whose pathway is depend on reproductive gonadal steroid hormone- estrogen, progesterone.

Ans4) acetylcholine(Ach)mediate action of corticosterone on GABA inhibition and non adrenaline release.