hormones Flashcards
thyroxine
gland- thyroid
target- somatic cells
wcitr-TSH
effect- increase uptake of O2 increasing the metabolism
TSH
g- ANT PIT
target- thyroid
- TSHRF
-causes thyroxine to be released
prolactin
ant pit
mammary glands
suckling of youth
stimulates mammary glands to produce milk
somatotrophin
ant pit
liver bones and other tissues
GHRH
stimulates growth and reproduction
oxytocin
post pit uterine breast uterine stretching infant feeding smooth muscle contractions of uterine let down of breast milk
glucagon
pancreas
liver/body cells
alpha cells in pancreas detect low blood glucose concentration
cells decrease glucose uptake, liver converts glycogen to glucose
insulin
pancreas liver/body cells beta cells of the islets of langerhand detect high blood glucose concentration liver converts glucose to glycogen and cells increase uptake of glucose
aldosterone
adrenal context
nephron collecting duct
angiotensin 2
nephron collecting duct reabsorbs sodium
high temp
hypothalamus detects– impulses sent and body sweats, hair becomes flat and vasodilation occurs. this negates problem
low temp
hpthalamus detects and sends impulses to body- vasoconstriction, hair stands up shivering. this negates problem
high glucose concentration in blood
pancreas detects then beta cells of the islets of langerhan in pancreas secrete insulin which effects liver and makes it convert glucose to glycogen and causes body cells to increase uptake of glucose. this negates problem
low blood pressure
means low blood volume and therefore means a low amount of water in the blood. the osmoreceptors in the hypothalamus detect and send impulses to the post pit which secretes ADH and this causes the collecting duct of the nephron to reabsorb water and excrete k ions. this negates problem
high bloop pressure
osmoreceptors in hypothalamus detect and inhibits the release of ADH from the post pit. the collecting duct does not reabsorb water it is excreted
FUCKIN NEGATEEEE
uterine stretching
receptors send impulses to posterior pituitary which releases oxytocin, this causes smooth muscle contraction of the uterine to promote the stimulus
PROMOTE
infant feeding
post pit release oxytocin which causes the let down of breast milk in the breast
PROMOTE FUCKER
low sodium concentration in blood
kidney detects and secretes enzyme renin, renin then converts angiotensin 1 to angiotensin 2 and angiotensin 2 stimulates the adrenal cortex to secrete aldosterone. aldosterone causes the collecting duct of the nephron to reabsorb na ions and secret k
angiotensin is a plasmaprotein in blood
NEGATE
high sodium concentration in blood
kidney detects and stops secreting renin, angiotensin 1 is not converted into angiotensin 2, so aldosterone not secreted from the adrenal cortex and the collecting duct does not reabsorb Na+ NEGATE BISH
low levels of thyroxine
chemoreceptors in hypothalamus detect and release TSHRF which causes the ant pit to release TSH which causes the thyroid gland to release thyroxine. THIS NEGATES THE MOTHER FUCKING PROBLEMMMM
tropic hormones
cause another gland to release their hormone
low concentration of glucose in blood
pancreas detects and alpha cells in pancreas release glucagon, cells decrease uptake in glucose and the liver converts glycogen into glucose
stress
sumpatheic nervous system sends impulses to the adrenal medulla which secretes adrenalin or epinephrine and this causes the fight or flight reaction increase heart rate blood pressure blood volume and decrease in digestion
prolactin in other organisms
fish- osmoregulation and it prevents the loss of ions and uptake of water
birds- fat regulation and reproduction
amphibians- delays metamorphosis
