Absorption of Vitamins and Minerals Flashcards Preview

My NBCE - GI Physiology > Absorption of Vitamins and Minerals > Flashcards

Flashcards in Absorption of Vitamins and Minerals Deck (13)
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1

Fat soluble vitamins (?) are processed in the same manner as what?

ADEK
Other lipids

2

What is made by bacteria in the colon?

Vitamin K

3

Water soluble vitamins (? - except?) enter where? Via what?

B, C, and folic acid
Except vitamin B12
Enterocytes
Secondary active transport using Na+-amino acid co-transporters

4

All water soluble vitamins exit the enterocytes by what? To where?

Passive diffusion
Portal circulation

5

Folic acid and iron are absorbed where?

In the jejunum

6

Iron combines with what to form transferrin?

apotransferrin

7

What does transferrin do?

Carries iron in the blood to cells in the liver, spleen, and bone marrow

8

Once in the liver, spleen, and bone marrow, iron combines with what to form what?

apoferritin
ferritin

9

What is the other name for Vitamin B12?

cobalamin

10

Vitamin B12 is attached to what secreted by the parietal cells of the stomach?

Intrinsic factor

11

The Vitamin B12-Intrinsic factor complex is delivered to where?

The terminal ileum

12

In the terminal ileum the Vitamin B12-IF complex is bound to what?

cubilin receptors on the enterocytes and transported in.

13

Vitamin B12 diffuses out of the enterocytes into where?

The portal vein