PTH and etc

Created by shmurray 

Upgrade to
remove ads

18 terms · zoo331

hypercalcemia

too much calcium; deposit into bones or excrete

with hypercalcemia, PTH and calcitonin

pth decreases, calcitonin increases

what happens to threshold and ap with hypercalcemia?

increases threshold making it harder for AP's

hypocalcemia

too little calcium; increase PTH (osteoclasts degrade bone)

calcitonin

stimulates osteoblasts to put Ca in bone

what secretes PTH?

parathyroid

how does pth increase blood calcium levels?

bone resorption, kidney resorption, vit D increases absorption

vitamin D activates

liver and kidney

sun on skin makes which vit D?

hydroxycholecalciferol

decreased Ca-->PTH makes what form of vitamin D in the kidneys?

calcitriol (dihydroxy)

2 direct targets of pth?

kidney and bone

GH cascade

hypothal (ghrh), ant pit (gh), liver (igf)

IGF

inhibits ghrh, stim ghih; inhibits gh

gluticorticoids

decrease bone formation, increase breakdown

estradiol

decreases apoptosis, decreases osteoclast

testosterone

increases bone formation, inhibits resorption

decrease plasma Ca/promote bone deposition

calcitonin, gh, igf, sex hormones

increases plasma Ca/promote resorption

PTH, vitamin D (dihydroxy), cortisol

Please allow access to your computer’s microphone to use Voice Recording.

Having trouble? Click here for help.

We can’t access your microphone!

Click the icon above to update your browser permissions above and try again

Example:

Reload the page to try again!

Reload

Press Cmd-0 to reset your zoom

Press Ctrl-0 to reset your zoom

It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.

Please upgrade Flash or install Chrome
to use Voice Recording.

For more help, see our troubleshooting page.

Your microphone is muted

For help fixing this issue, see this FAQ.

NEW! Voice Recording

Click the mic to start.

Create Set