47 - feedback, ADH, insulin Flashcards
1
Q
negative feedback is like a ______.
examples of neg feedback
A
thermostat
ex. glucose to insulin
2
Q
positive feedback
A
rise of one hormone causes the rise of another hormone
ex. follicle death
3
Q
ADH regulates fluid vol by…
A
1 renal reabsorb
2 concentrated urine
3 incr fluid vol or decr in osmolality
4 vasodilation
4
Q
how is ADH secreted
A
hypovol/high osmolality>
osmoreceptors in hypothalamus>
stim release in post pit
5
Q
insulin
A
promotes transport of glucose fr blood to cell membrane
>liver + muscles store excess glucose as glycogen
6
Q
rise in insulin after a mea causes..
A
.-inhibit gluconeogenesis
-enhance fat deposition
7
Q
insulin’s counterregulatory hormones
A
-glucagon
-epinephrine
-cortisol
-growth hormone
> works against insulin>causes incr in glucose
