CH26: Hypothalamus

Question 1

Part of hypothalamus that is sparse (p. 582)

Answer 1

lateral

Question 2

Part of hypothalamus that is rich in cells (p. 582)

Answer 2

Medial

Question 3

Two main efferent fiber systems of the hypothalamus (p. 582)

Answer 3

mammillothalamic, mammillotegmental

Question 4

Main blood supply to the posterior pituitary (p. 583)

Answer 4

inferior hypophyseal artery

Question 5

inhibits release of GH, opposing the effects of GHRH, inhibits release of TSH and prolactin (p. 584)

Answer 5

Somatostatin

Question 6

When is GH highest (p. 584)

Answer 6

Within first hour or two after onset of sleep

Question 7

Glucocorticoids (p. 584)

Answer 7

cortosol or hydrocortisone

Question 8

Mineralocorticoids (p. 584)

Answer 8

Aldosterone

Question 9

Haloperidol side effect due to its dopamine- blocking property (p. 585)

Answer 9

Galactorrhea

Question 10

% of sarcoidosis wherein hypothalamus is affected (p. 586)

Answer 10

5%

Question 11

Leading cause of precocious puberty in both boys and girls (p. 589)

Answer 11

Hypothalamic hamartoma

Question 12

Appetite center (p. 590)

Answer 12

Ventrolateral nucleus

Question 13

Satiety center (p. 590)

Answer 13

Ventromedial nucleus

Question 14

Obesity, hyogonadism, hypotonia, mental retardation, short stature (p. 590)

Answer 14

Prader- Willi syndrome

Question 15

How to give dexamethasone in Dexamethasone suppression test? (p. 593)

Answer 15

2mg q6 hours orally for 2 days OR single dose 8mg at midnight

Question 16

Pituitary form of hyperadrenalism (p. 592)

Answer 16

Cushing disease