Vitamin K

Question 1

what is the name for vitamin K found in plants

Answer 1

phylloquinone

Question 2

what is the name for vitamin K made by bacteria

Answer 2

menaquinone

Question 3

What is the process for Vitamin K Absorption?

Answer 3

1) Menaquinone (Animal) and Phylloquinon (plants) are ingested, as they pass to the SI bile is released
2) 80% of Vit K is absorbed in the SI (Jejunum)
3) 100% is packed into Chylomicrons and transported to the liver
4) from the liver it is incorporated into VLDL

Question 4

Where is Vitamin K Stored?

Answer 4

In the Liver mostly, some in Heart, Lungs and Kidneys

Question 5

what are the functions of Vitamin K

Answer 5

Coenzyme, clotting, bone formation

Question 6

What is the product of Vitamin K’s function as a Coenzyme? What is the function of this product?

Answer 6

makes CARBOXYGLUTAMATES- are a Calcium Binding Site

** Used in clotting and bone formation

Question 7

what is the recommendation for Vitamin K in adult men? in adult women?

Answer 7

Adult Men - 120ug

Adult Women - 90ug

Question 8

What are good sources of Vitamin K

Answer 8

Phylloquinone (Plants) - Dark Green Leafy Vegetables, PB, Brocolli, peas, beans, oild

Menaquinone (Animals) - meat, yogurt, cheese, egg yolks

Question 9

who is at risk for vitamin K deficiency

Answer 9

Newborns
patients with Fat Malabsorption
Patients chronically treated with Antibiotics

Question 10

what are the symptoms of Vitamin K deficiency

Answer 10

increased bleeding, osteoporosis, can be fatal

Question 11

what is the safe upper limit for vitamin k

Answer 11

there isn’t one - no toxicity symptoms