Starch is digested by ptyalin.
is it digested by hormones blood ptyalin or none of these?? if any one know plz tell me
Protien
Nothing is digested by the liver in the digestive system at all. So there is basically no answer to it.
Saliva
It is starch! I think
The nutrient that is not digested but stimulates intestinal muscle contractions is fiber. Fiber is a type of carbohydrate that may be soluble or insoluble.
Starch (carbohydrates) is broken down (digested) to maltose by salivary amylase.
CelluloseAnswer:To be a nutrient a food material has to be digested and incorporated into the body as stored fat, converted to muscle or other protein, or converted to energy. So no nutrient as "not digested"/ Non-nutrient materials which provide other functions are fiber and water, and minerals asn trace chemicals such as salt, iron, zinc. Vitsmins can be regarded as supplimental to the body's own production. fibre can not be digested
fats
Because it is in a form which is already digested e.g honey. Honey is already digested by bees so it is far more easier for the human digestive system to absorb.
== == Vitamin c and d.
no ptyalin is not secretes by the cells in the stomach