Vit D

Question 1

D3 is known as ____ while D2 is known as ___

Answer 1

cholecalciferol; ergocalciferol

Question 2

the major circulating form of Vit D is ____; the active form is called _____

Answer 2

25(OH)D; calcitriol aka 1,25

Question 3

___ path goes through kidney while ___ path goes through other tissues

Answer 3

endocrine; paracrine/autocrine

Question 4

body’s need for more Ca is sensed by an ___ in ____ hormone; need for more phosphate is sensed by a ___ of ____

Answer 4

increase; PTH; decrease; FGF-23

Question 5

the endocrine path targets ____ and ___

Answer 5

intestine; bone

Question 6

calcitriol causes production of proteins that bind calcium, including:

Answer 6

calbindin, Ca channel, ATPase

Question 7

this protein opens Ca channels in Brush border membrane

Answer 7

calbindin

Question 8

DV is ___, EAR is ____, RDA is ___

Answer 8

5 mcg; 10mcg; 15mcg

Question 9

what are food sources of vit D?

Answer 9

milk, orange juice, margarine, sardines and salmon

Question 10

What does MED stand for?

Answer 10

minimal erythema dose (reddening of skin)

Question 11

Vit D synth stops at about __ MED

Answer 11

1

Question 12

everyone should take a supplement of ___ IU

Answer 12

400

Question 13

UL is ____ IU; > ___ nmol/L not protective

Answer 13

4000 IU; 150

Question 14

retinoic acid and 1,25 are both ____ factors

Answer 14

transcription