Vitamins Flashcards
(44 cards)
Vitamins are caloric organic compounds necessary for metabolic control & disease prevention.
T/F
F
non- caloric
The classification of the ____ vitamins is not based on their _________ or _____
13
chemical structure or functions.
Classification of vitamins is based on their ________ and ________
biological & chemical activities
Fat soluble vitamins
Stored in ________ and _______
adipose tissue and liver
Fat soluble vitamins
Excess is excreted in urine
T/F
F
Excess not excreted in urine
Fat soluble vitamins
Excess becomes toxic to the body.
T/F
T
Fat soluble vitamins
Examples: Vitamins ________
A, D, E, K
Out of the fat soluble vitamins, which are synthesized by the body
Vitamins D & K are synthesized in the body but not in adequate amount
Water soluble vitamins
stored in the body
T/F
F
Not stored in the body
Water soluble vitamins
Usually toxic
T/F
F
Usually non- toxic
Water soluble vitamins
Excess is excreted in the urine
T/F
T
Water soluble vitamins
Examples : Vitamins _____________
B complex & C
Which is more common, deficiency or excess of vitamins
Deficiency
Excess of vitamins is rare but More cases are seen now and these can be accounted for by ___________ and ____________
the availability of vitamin supplements and fortification of foods.
Causes of vitamin deficiency are
1)Primary- this happens when vitamins are _______________ .
unavailable in the body
Causes of vitamin deficiency are
1)Primary-
•May be due to ______ as in ________
•————-
•chronic ________
• prolonged ________
inadequate intake; poor dietary intake
anorexia nervosa
alcoholism
parenteral feeding
Secondary vitamin deficiency is caused by
•increased ______ of vitamins by the body as seen during _____, in chronic ___, ____, trauma and ________.
•inadequate __________ as in ________ syndrome, ________ deficiency
•excessive _____ example _______
utilization; pregnancy; illnesses; sepsis; preterm infants
absorption from GIT
malabsorption; Intrinsic factor
loss; steatorrhoea
_______-______ children go blind yearly in developing countries & this is attributed to vitamin _____ deficiency
250,000- 500,000
A
In Nigeria, ______% under ___ are vitamin A deficient
29.5
5
Folate & vitamin B12 deficiency is commoner among _______________ according to a study conducted in JUTH by Dorothy J. et al in 2011
women in childbearing age
Laboratory investigations are routine for diagnosis of vitamin disorders
F
Laboratory investigations are not routine for diagnosis
Diagnosis of vitamin disorders is usually clinical following a high index of suspicion
T/F
T
Laboratory investigations include
Plasma concentration of vitamins- reliable only for few vitamins e.g. vitamin ____ and _____ .
For others like _____ the plasma concentration reflects the _____________
B12 & D
folate
adequacy of recent intake
Laboratory investigations include
Measurement of serum vitamin _________ like _____________ in Vitamin A disorder
binding proteins
retinol binding protein
