there arefour points:
1.presence of villi gives large surface area for absorption
2.villi consist of extensive network of blood vessels which allows max assimilation and absorption
3.the length of the small intestine is so long and the digestion is a slow process, thus by the time the food or chyme reaches the end of the small intestine, its completely absorbed
4.intestinal juices present in small intestine speed up the absorption
-> write this in exam and you will pakka get full ;D
Small Intestine.
The small intestine is where the vast majority of digestion and absorption of food takes place.
No, digestion begins in the mouth but also occurs in the stomach and small intestine.
Small intestine
The majority of digestion takes place in the small intestine. This is where nutrients from food are broken down and absorbed into the bloodstream for use by the body. Enzymes and acids in the small intestine help further break down the food particles.
Digestion of some fats can begin in the mouth where lingual lipase breaks down some short chain lipids into diglycerides. However fats are mainly digested in the small intestine. The presence of fat in the small intestine produces hormones that stimulate the release of pancreatic lipase from the pancreas and bile from the liver which helps in the emulsification of fats for absorption fatty acids.
Most chemical digestion occurs in the stomach and absorption occur in the intestines in humans and many other animals.
mouth,stomach and small intestine
The small intestine completes the process of chemical digestion.
Most of digestion occurs in the stomach and most absorption occurs in the small intestine.
The two processes that occur are digestion and absorption. Digestion is the process by which your body breaks down food into small nutrient chemicals. While absorption is the process in which when the small nutrient molecules go through a wall of the digestive system and into the blood.
Most chemical digestion occurs in the small intestine, specifically in the duodenum. Enzymes secreted by the pancreas and bile from the liver help break down carbohydrates, proteins, and fats into smaller molecules that can be absorbed by the body.