w4 - Hypo-Pit Axis Flashcards
TSH stimulates thyroid to produce
thyroxin
posterior pit stems from ___ whereas ant pit stems from
neurones
bloodstream
cold exposure will stimulate ___, producing ___ ,which causes the __ ___ to produce ___ which stimulates the thyroid to produce thyroxine
hypothalamus
TRH
ant.pit
thyrotropin
hypothala produces ___ to stimulate the pit into producing the sex hormone
GnRH
ACTH is produced to stimualte adrenal gland to poduce cortisol, effect on body
regulates blood sugar levels
incr fAT
defend against infection
helps body respond to stress
DOpamine inhibits ___
prolactin
paired hormones of
1) steroids
2) thyroid
3) sex hormones
4) Growth hormon
5) prolactin
central - peripheral 1 - ACTH, COrtisol 2 - TSH, THyroxine 3- LH/FSH, Testosterone or Estradiol 4- GH, IGF-1 5- Prolactin
outline insulin stress test
insulin given
reduces blood glucose
causes incr in cortisol and GH
synthetic ACTH is given to test
Cortisol levels
test for diabetes insipidus
water deprivation test
if urine conc. doesnt incr, this shows they have it