thyroid rps Flashcards
1
Q
how are diagnostic and therapies simplified
A
by thyroid physiology
2
Q
what does thryoid hormone production require
A
iodine
3
Q
thyroid avidly removes…
A
iodine from the blood
4
Q
what does thyroid do with the iodine
A
traps it by incorporation into thyroid hormone molecules T3 and T4
5
Q
how is iodine absorbed
A
rapidly and completely from GI system when admin orally
6
Q
how is iodide ion removed from blood and what percent of admin dose
A
by thyroid and 10-30%
7
Q
how do you excrete excess iodine
A
pee out
8
Q
what percent of oral dose is peed out within 24 hours
A
approx 50% in normal functioning thyroids
9
Q
anything that stays in body after 24 hours has
A
long half life and extensive recirculation through body
