Question

Most of digestion and adsorption of the food takes place in
A. Stomach
B. Liver
C. Small intestine
D. Large intestine

Answer 1

Hint:- Digestion is a type of catabolism that breaks down food into small molecules that can be consumed by the body and used for energy, development, and repair. When food passes across the gastrointestinal (GI) tract, digestion happens. Both hormones and nerves regulate the digestive process

Complete Answer:- Digestion starts with salivary amylase in the mouth and ends with pancreatic amylase in the small intestine. Monosaccharides, such as glucose, galactose and fructose, are formed by polysaccharide breakdown and are transported by assisted diffusion or active transport to the intestinal epithelium. The sugars are transferred to the bloodstream through facilitated diffusion.
Pepsin in the liver, and pancreatic trypsin and chymotrypsin in the small intestine break down the proteins into peptide fragments. Digestion of fat happens in the small intestine by pancreatic lipase. In the digestive process, a monoglyceride and two fatty acids are formed. Fat-soluble vitamins, along with proteins, are consumed and processed. By absorption or mediated transport, most water-soluble vitamins are ingested.The stomach retains some water, but much of it is drained by diffusion into the small intestine.
Stationary contraction and relaxation, named segmentation, is the most frequent activity of the small intestine. Little net movement comes from segmentation. The chyme is combined and taken into contact with the wall of the intestine, steadily progressing into the large intestine. Pacemaker cells in the smooth muscle layer activate the gestures. Segmentation is replaced by a peristaltic activity, called the migration motility complex, until most of the materials are ingested, which transfers some undigested food to the large intestine. Migrating motility is initiated by the candidate intestinal hormone, motilin.
There are 3 sections of the large intestine: the cecum, colon and rectum. The primary purpose is to store faecal content for removal and concentrate it. Via the ileocecal sphincter, Chyme joins the cecum, which relaxes and opens as a consequence of the gastroileal reflex.

From these discussions we can conclude that the small intestine is the palace where most of digestion and adsorption of the food occurs

Therefore the correct answer is option (C).

Note:- Constipation, owing to reduced motility of the large intestine, is the lack of defecation. This results in excessive water retention from urine, making it impossible to expel. Dietary fibre can cause distension and improve motility, and is not digested in the small intestine. Diarrhea is caused by reduced absorption of fluid or increased secretion of fluid, resulting in increased luminal fluid, resulting in distension and increased motility.