Vitamins Flashcards

1
Q

What vitamins are fat soluble?

A

ADEK

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2
Q

What vitamins are water soluble?

A

B and C

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3
Q

Where are fat soluble vitamins absorbed and how?

A

In micelles (the same way as fat) in the ileum

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4
Q

Where are water soluble (except vitamin B12) vitamins absorbed?

A

Jejunum

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5
Q

How is vitamin B12 absorbed?

A
  1. B12 binds with R-protein in the mouth
  2. R- protein protects B12 from HCl in the stomach
  3. Protease in the duodenum release B12 from R-protein
  4. Intrinsic factor produced by parietal cells in the stomach help B12 be absorbed
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6
Q

What are the functions of vitamin A?

A

Cellular growth and differentiation
Vision
Lymphocyte production
Skin and mucous membranes

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7
Q

What are some sources of vitamin A?

A

Liver, Dairy, fruit and veg, oily fish

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8
Q

What occurs due to a deficiency in vitamin A?

A

Night blindness, growth retardation, increased infection risk

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9
Q

What is the function of vitamin C?

A

Collagen synthesis, antioxidant, absorption of non-haem iron

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10
Q

What are some sources of vitamin C?

A

Citrus fruit, green veg

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11
Q

What occurs due to a deficiency in vitamin C?

A

Bleeding gums, scurvy, aching bones

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12
Q

What are the roles of vitamin B12?

A

DNA synthesis, brain development

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13
Q

What is a source of vitamin B12?

A

Meat

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14
Q

What occurs due to a deficiency in B12?

A

Anaemia

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15
Q

What are the roles of vitamin D?

A

Calcium absorption in the gut, resorption in kidneys

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16
Q

What are some dietary sources of vitamin D?

A

Liver, fish

17
Q

What occurs due to a deficiency in vitamin D?

A

Frequent bone fractures, muscle weakness, bone pain

18
Q

What are the roles of vitamin E?

A

Antioxidant, protects cell walls

19
Q

What occurs due to a deficiency in vitamin E?

A

Muscle weakness, degeneration of retina

20
Q

What is the function of vitamin K?

A

Blood clotting

21
Q

What occurs due to a deficiency in vitamin K?

A

Gum bleeding, easy bruising