Question

how is the small intestine designed to assimilate the food? explain

Answer 1

To digest the carbohydrates, fats and proteins, the small intestine receives the secretions of the liver and pancrease. The acidic food coming from the stomach is made alkaline for the action of pancreatic enzymes. The liver secretions have bile juice. The bile salts break the larger fat globules into the smaller one for the effective action of enzymes (emulsification of fats).
The walls of small intestine contain glands which secrete intestinal juice. This contains enzymes to convert:
Proteins àamino acids
Complex Carbohydrates àglucose
Fats àfatly acids & glycerol
The digested food components are absorbed into the walls of the intestine.

Answer 2

hi mate,

==> we know that the the small intestine has millions of tiny finger-like projections called villi. These villi increase the surface area for more efficient food absorption. Within these villi, many blood vessels are present that absorb the digested food and carry it to the blood stream.

==> and also we know that the food breakdown into glucose and then the cerb's cycle reaction takes that is given in the book class 10 bio and the rest material move in small intestine small villi like projection aborb the nutrients and that are absorb by cell and the cellulose of food which is indigested expelled out.

==> Digestive juice produced by the small intestine combines with pancreatic juice and bile to complete digestion.

==> The body completes the breakdown of proteins, and the final breakdown of starches produces glucose molecules that absorb into the blood.

===>>The small intestine, despite its name, is the longest part of the gastrointestinal tract.

==>> It works with other organs of the digestive system to further digest food after it leaves the stomach and to absorb nutrients.

I hope it helps you