Tuesday, September 25, 2012

functional importance of carbohydrates

carbohydrates

Functional importance of carbohydrate
·         Ready source of energy .
·       -  It also constitutes the structural material of the organism.
·      -   Acts as important storage of food material of the body.
·    -     Protein and fat metabolized on the back ground of carbohydrate.
·        - It gives nutrition to the nervous tissue & retina.
·       -  It prevents ketosis.
·      -   Carbohydrate is a protein sparer, that is -carbohydrate is burned in preference to the burning of protein.  

Rickets disease and changes in rickets



Rickets
Rickets
                 This occurs in children who are not exposed to sunlight and whose diet is deficient in vitamin D as well . Typically this was (it is no longer common in western world ) thus a disease of the poor European children .

The changes in rickets are follows :
·           In the bone , the calcium content is low and the bones becomes  therefore soft. Such bones bow when they bear weight as in femur and tibia.
·         The process of ossification in cartilaginous bone is retarded . Normally the cartilage is first calcified, then removed and then new bones are deposited. In rickets, the calcification of the cartilage is poor , the cartilage cells continue to proliferate and the shaft becomes broad and irregular.
Rarely the rickets may be due to disease ( destruction ) of the kidney ( renal rickets ).