Exam 3 Flashcards
what effect does exercise have on oxytocin
none
steroid hormones are derived from________
cholesterol (lipid nature)
which hormones can pass across plasma membrane
steroid
which 2 organs produce steroid hormones
adrenal gland and gonads
steroid hormones bind to receptors where?
inside the cell
non steroid hormones are _________ based
amino acid
non steroid hormones are ________soluble
water
which hormones can be transported in the blood well
non steroid
which hormones need a carrier molecule
steroid
where are the receptors for non steroid hormones
outside the cell
which hormones need a secondary messenger
non steroid
4 actions of hormones
- ) Stimulates protein synthesis (structural and functional proteins)
- ) Change rate of enzyme activity (phosphorylation changes enzyme activity)
- ) Alter plasma membrane transport (changing the excitability of the cell)
- ) Induce secretory activity (production of another hormone)
where are opioids produced
the anterior pituitary
how does exercise affect GH?
short anaerobic exercise will increase GH
what is the only gland that can store its secretions?
thyroid
how does exercise affect TSH
no effect
why doesn’t exercise affect TSH
TSH is produced at night
how does exercise affect ACTH production
incr
what does ACTH do
increases free fatty acid metabolism and gives us new glucose for energy
how does exercise affect PRL?
high intensity exercise increases PRL levels for 45 minutes after exercise and then return to baseline levels
have a lack of support in chest can do what to PRL levels during exercise
incr
high PRL levels does what to the breasts
enlarges them
long term training does what to resting PRL in men?
decreases the resting levels of PRL (bc not enough estrogen to shut off the inhibitor to PRL)
how does exercise affect the gonadotropins (FSH and LH)
decr
do endurance athletes that are men have higher or lower testosterone levels than those who are sedentary?
lower (65-85% of that of sedentary ppl)
how does exercise affect ADH
greatly increases it (bc we want tp maintain fluid during exercise)
how does exercise affect oxytocin?
no effect