Disorders Of Appetite

Question 1

Define Polydipsia.

Answer 1

Excessive thirst.

Question 2

Adipsia

Answer 2

Lack of thirst.

Question 3

Define anorexia

Answer 3

Eating disorder where you feel a need to keep your weight as low as possible.

Question 4

Define obesity.

Answer 4

Very overweight, with a lot of body fat.

Question 5

What is the hormone responsible for the regulation of Osmolality?

Answer 5

ADH/ Vasopressin

Question 6

How does ADH work and where is it stored?

Answer 6

-Produced in the hypothalamus and stored in the posterior pituitary gland.

-Released by the posterior pituitary in response to sensors that detect an increase in blood osmolality.

Question 7

If the plasma concentration of ADH is low will there be water diuresis or an anti-diuresis?

Answer 7

Water diuresis, (lose water).

Question 8

Which regions are sensory osmoreceptors found in the hypothalamus?

Answer 8

-Organum vasculosum
-Subfornical Organ

Question 9

Give 3 causes of primary polydipsia

Answer 9

-Anxiety
-Boredom
-Stress

Question 10

Give 5 causes of secondary polydipsia

Answer 10

-Kidney failure
-Obstructive uropathy
-Addison’s disease
-Conns syndrome
-Bartter syndrome

Question 11

What do the juxtaglomerular cells of the renal afferent arteriole detect and what gets released in response to this?

Answer 11

They detect drops in blood pressure and release renin.