Vit K

1. Osteoblasts require vit K for the secretion of oseteocalcin

True

False

2. Long term antibiotic users are at risk of a vit K deficiency

True

False

Kills the Vit K making bacteria in the large intestine

Explanation

Kills the Vit K making bacteria in the large intestine

3. Enough vit k is made endogenously for 1/2 of our total requirements

True

False

4. Vit K is readily excreted in faces so toxicity due to build up is not common

True

False

5. K3 is the form of Vit K produced by intestinal bacteria

True

False

K2 is the form produced by intestinal bacteria in the large intestine

Explanation

K2 is the form produced by intestinal bacteria in the large intestine

6. The RDI for Vit K is 150mg/day

True

False

There is no RDI for Vit K as we synthesis some of it endogenously

Explanation

There is no RDI for Vit K as we synthesis some of it endogenously

7. Vit K increases the efficiency of anticoagulant drugs such as warfarin

True

False

Vit K promotes blood clotting, drugs such as warfarin try to stop the blood clotting so Vit K is DECREASING the efficiency.

Explanation

Vit K promotes blood clotting, drugs such as warfarin try to stop the blood clotting so Vit K is DECREASING the efficiency.

8. Megadoses of Vit A inhibit absorption of Vit K

True

False

9. Vit K is involved in: (can choose more than 1)

Blood clotting process

An essential cofactor for carboxylases in the liver

Maintaining epithelial cell integrity

Bone metabolism

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10. Which of these explain why newborns are at risk of vit K deficiency?

Sterile intestinal tract so cannot make Vit K

Havn't had enough exposure to the sun

Vit K cannot cross the placenta

Breast milk is low in Vit K

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11. Vit K injections for new borns are mandatory in NZ

True

False

they are recommended by the governement

Explanation

they are recommended by the governement

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