Pantothenic Acid revision questions - week 10

Question 1

food source

Answer 1

widely distributed

e.g. total raisin bran and sunflower seeds

Question 2

Digestion

Answer 2

• present as free pantothenic acid and 85% as CoA in diet

- released from Coenzyme A by digestion in SI

Question 3

Absorption

Answer 3

• 40-60% of intake is bioavailable

- active transport depending on concentration available

Question 4

Transport

Answer 4

bound to RBCs

Question 5

Storage

Answer 5

minimal storage - present in every cell of body as CoA

Question 6

Excretion

Answer 6

via urine

Question 7

Coenzyme form

Answer 7

CoA

Question 8

Main function

Answer 8

coenzyme in energy metabolism and fatty acid synthesis

Question 9

RDI

Answer 9

none

but AI 5mg for men and 4mg women

Question 10

Toxicity

Answer 10

none

Question 11

Deficiency

Answer 11

are very rare

- weakness, fatigue, impaired muscle function, GI tract disturbances