Hypothalamus and Pituitary Gland

Question 1

what is a tropic hormone

Answer 1

one which has another endocrine gland as its target

Question 2

what hormones are stimulating tropic neurohormones secreted by the hypothalamus

Answer 2

Throtropin, corticotropin, growth hormone, gonadotropin and prolactin releasing hormones

Question 3

what are the inhibitory tropic neurohormones released by the hypothalamus

Answer 3

dopamine and somatostatin

prolactin inhibiting and growth hormone inhibiting

Question 4

what two hormones govern growth hormone release

Answer 4

somatostatin (inhibitory) and growth hormone releasing hormone

Question 5

what type of hormone is corticotropin releasing hormone

Answer 5

peptide

Question 6

how do hormones travel from the hypothalamus to anterior pituitary

Answer 6

after being secreted by neurosecretory neurons at the median eminence they are transferred by a network of tiny blood vessels (hypothalamic-hypophyseal portal system)

Question 7

hormones secreted by anterior pituitary

Answer 7

TSH, ACTH, FSH, LH, GH, Prolactin

Question 8

what are the two gonadotropins

Answer 8

FSH and LH

Question 9

which of the anterior pituitary hormones are tropic

Answer 9

TSH, ACTH, FSH, LH, GH

Question 10

what is the purpose of prolactin

Answer 10

direct.

milk production

Question 11

what hormone inhibits prolactin release

Answer 11

dopamine (PIH)

Question 12

which AP tropic hormone acts on the adrenal cortex

Answer 12

corticotropins (ACTH)

Question 13

what two neurohormones are secreted by the posterior pituitary

Answer 13

vasopressin (anti-diuretic hormone) and oxytocin

Question 14

what is the hypothalamic-hypophyseal portal system

Answer 14

the two capillary beds of the hypothalamus and anterior pituitary in series for the transport of neurohormones

Question 15

TSH release is stimulated by

Answer 15

TRH

Question 16

action of thyroid stimulating hormone

Answer 16

tropic.

thyroid hormone release from thyroid gland

Question 17

ACTH action

Answer 17

tropic.

cortisol release from adrenal cortex

Question 18

growth hormone action

Answer 18

tropic.
release of insulin like growth factor 1 (IGF-1) from liver
direct.
tissue metabolism

Question 19

action of FSH and LH

Answer 19

tropic.
sex hormone release
direct.
reproductive function regulation

Question 20

what are androgens

Answer 20

male sex hormones

Question 21

what tissue secretes cortisol

Answer 21

adrenal cortex

Question 22

what are the two regulatory neurohormones acting on growth hormone

Answer 22

growth hormone releasing hormone and somatostatin (growth hormone inhibitory hormone)

Question 23

two types of feedback loop

Answer 23

short loop and long loop

Question 24

where are posterior pituitary neurohormones synthesised

Answer 24

magnocellular neurons which have cell bodies in hypothalamus and axons in PP

Question 25

other name for pituitary stalk

Answer 25

infundibulum

Question 26

which lobe is a continuation of hypothalamus

Answer 26

posterior

Question 27

where do PP magnocellular neurons end

Answer 27

synapse to capillaries

Question 28

where is the PP neurohormone packaged

Answer 28

in the cell body

Question 29

what feature allows vasopressin and oxytocin to be released seperately

Answer 29

magnocellular neurons are specific to one or the other