Absorption of Vitamins and Minerals

Question 1

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

Answer 1

ADEK

Other lipids

Question 2

What is made by bacteria in the colon?

Answer 2

Vitamin K

Question 3

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

Answer 3

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

Question 4

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

Answer 4

Passive diffusion

Portal circulation

Question 5

Folic acid and iron are absorbed where?

Answer 5

In the jejunum

Question 6

Iron combines with what to form transferrin?

Answer 6

apotransferrin

Question 7

What does transferrin do?

Answer 7

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

Question 8

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

Answer 8

apoferritin

ferritin

Question 9

What is the other name for Vitamin B12?

Answer 9

cobalamin

Question 10

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

Answer 10

Intrinsic factor

Question 11

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

Answer 11

The terminal ileum

Question 12

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

Answer 12

cubilin receptors on the enterocytes and transported in.

Question 13

Vitamin B12 diffuses out of the enterocytes into where?

Answer 13

The portal vein