pituitary physiology

Question 1

where does ADH go when released from pituitary

Answer 1

kidneys

Question 2

where does oxytocin go when released from pituitary

Answer 2

males - smooth muscle in ductus deferens and prostate gland

females - uterine smooth muscle and mammary glands

Question 3

what happens when theres too much thyroxine produced in response to cold

Answer 3

it negatively feedbacks to the anterior pituitary

Question 4

what stimulates the testes to produce testosterone

Answer 4

LH

Question 5

what stimulates the ovaries to produce oestrogen and progesterone

Answer 5

FSH

Question 6

how are corticosteroids produced

Answer 6

hypothalamus released CRH which stimulates pituitary to release ACTH which stimulates corticosteroid release from adrenal gland

Question 7

when TRH is released from hypothalamus what does pituitary release

Answer 7

TSH then thyroxine is produced

Question 8

when GnRH is released from hypothalamus what is released from pituitary

Answer 8

LH/FSH then E2/TEST

Question 9

when GHRH is released from hypothalamus what is released from pituitary

Answer 9

GH

Question 10

when dopamine is released from hypothalamus what happens

Answer 10

it inhibits prolactin

Question 11

when vasopressor is released from hypothalamus what happens

Answer 11

stored in posterior pituitary

Question 12

when oxytocin is released from hypothalamus what happens

Answer 12

stored in posterior pituitary

Question 13

what is GH’s peripheral hormone

Answer 13

IGF-1

Question 14

what type of test do you do if theres too much hormone

Answer 14

one that will suppress the hormone

Question 15

what type of test do you do if theres not enough hormone

Answer 15

a test that stimulates the hormone

Question 16

name some stimulation tests

Answer 16

• synacthen (synthetic ACTH)
• insulin stressed test or prolonged glucagon test
• water deprivation test (if water is denied then ADH should go up, urine osmolality go up)