Liver as a storage organ

Question 1

What is Ferritin?

Answer 1

Large spherical protein containing iron, which concentration directly proportional to total iron stores of body

Question 2

What are the 2 classes of vitamins and which is needed more highly? (2)

Answer 2

1) Water and Fat Soluble

2) Water as pass more readily through the body

Question 3

What are the fat soluble vitamins and the water soluble vitamins?

Answer 3

1) Fat: A,D,E,K

2) Water: B and C

Question 4

What is vitamin A used for? (4)

What are 3 sources of it?

Answer 4

1) Cellular growth, CM stabilisation, eyesight and reproduction
2) Oily fish, dairy and liver

Question 5

What consequences of vitamin A deficiency and toxicity?

Answer 5

1) Deficiency: Night blindness, growth retardation and increased infection susceptibility
2) Toxicity: Anorexia, vomiting, headache, reduced bone density, conjunctivitis

Question 6

What are the functions and 4 sources of vitamin C?

Answer 6

1) Synthesis of collagen NT and carnitine. (Antioxidant ability, and absorb non-haem iron)

Question 7

What are the consequences of vitamin C deficiency and toxicity?

Answer 7

1) D: Weakness, shortness of breath, aching, bleeding, gums, skin thickening
2) T: Diarrhoea, nausea, renal stone formation

Question 8

How many types of Vitamin B and what is role?

Answer 8

1) 8 types

2) Cell metabolism and energy production

Question 9

Functions of Vitamin D

Answer 9

Increased intestinal calcium absorption
Resorption and formation of bone
Reduced renal excretion of calcium
(Causes bone problems)

Question 10

Role of Vitamin E?

Answer 10

Antioxidant

Question 11

Role of Vitamin K

Answer 11

Activation of some blood clotting factors

Question 12

What is folate used for?

Answer 12

Use as a coenzyme in methylation reactions, DNA synthesis

Question 13

Where are clotting factors produced and what is their role?

Answer 13

Produced in the liver

Produce a fibrin clot to prevent fibrin clot