Can anyone please tell me how mechanical digestion occurs in the stomach?

Question

thanks!

Answer 1

Food enters the stomach upon passage through the cardiac orifice, also known as the esophageal sphincter. In the stomach, food is further broken apart through a process of heuristic churning and is thoroughly mixed with a digestive fluid, composed chiefly of hydrochloric acid, and other digestive enzymes to further denature proteins. The parietal cells of the stomach also secrete a compound, intrinsic factor which is essential in the absorption of vitamin B-12. As the acidic level changes in the small intestines, more enzymes are activated to split apart the molecular structure of the various nutrients so they may be absorbed into the circulatory or lymphatic systems. Absorption is when smaller molecules, such as glucose or alcohol, pass through the membrane of the stomach directly into the blood stream.

Answer 2

1. Mechanical or Physical:

This type of digestion involves physically breaking the food into smaller pieces without chemically changing it into different molecules.

The Importance of Mechanical Digestion
Mechanical digestion helps to facilitate the process of chemical digestion because once the food is physically broken down into smaller pieces, more surface area is exposed for the enzymes to carry out the process of chemical digestion. With more surface area exposed, chemical digestion is much more efficient, that is, more food is chemically digested and it happens quicker.

Organs of Digestion
Mouth Large Intestine
Esophagus Liver
Stomach Gall Bladder
Small Intestine


Alimentary Canal
- the path that food takes as it passes through the body
- includes the mouth, esophagus, stomach, small intestine, and large intestine

How does the food that we eat move through our digestive tracts? Food is moves along our alimentary canal by a series of wave like contaractions called peristalsis. This accomplished by the contaracting and relaxing of muscle layers that line our entire alimentary canal.

Answer 3

The stomach has muscles that move around so it can digest food more effectively

Answer 4

Next to none, mostly it is enzymatic and hydrolytic.