VITAMINS
Any of a specific group of organic compounds essential in small quantities for healthy human growth, metabolism, development, and body function; found in minute amounts in plant and animal foods or sometimes produced synthetically; deficiencies of specific vitamins produce specific disorders.
It is a metabolic regulator.
Vitamin theory is given by F.G.Hopkin.
Vitamin – Funk.
Vitamins is of two types
✓ Water Soluble
∆ B, C, P.
∆ Can’t be stored.
∆ Not harmful when present in excess quantity.
✓ Fat Soluble
∆ A, D, E, K.
∆ Can be stored i.e., in Liver.
∆ Harmful when present in excess quantity which leads to Hypervitaminism.
Vitamin A – RETINOL
Sources- Carrots, Mango, Papaya, Apple, Fish.
Functions of Vitamins
1- Protection from infection.
2- Anti – infection vitamin.
3- Protect from wrinkles.
Diseases- Eye related.
RETINA
1) ROD
Also called as Rhodopsin cell.
Helps to see in dim light .
Decreases in vitamin A , decreases in rhodopsin cell. Due to which we cannot see in dim light which leads to Night Blindness disease.
2) CONE
Also called Codopsin cell.
Helps to identify colours.
No relation with vitamin A.
Already formed during pregnancy.
Decreases in Codopsin cell it leads to colour blindness disease. Green and red colour will affected by this disease.
It occurs in childrens.
✓ XEROPTHALAMIA
Due to decrease in vitamin A.
Cornea will become dry and non transparent which leads to Blindness.
