GENERAL HISTOLOGY

Detailed explanation-1: -Mechanical Digestion The large pieces of food that are ingested have to be broken into smaller particles that can be acted upon by various enzymes. This is mechanical digestion, which begins in the mouth with chewing or mastication and continues with churning and mixing actions in the stomach.

Detailed explanation-2: -In mechanical digestion, food is physically broken down into smaller pieces by tearing, slicing, churning and mixing. In chemical digestion, chemicals produced by the body break down food into very small pieces.

Detailed explanation-3: -Mechanical digestion is a purely physical process that does not change the chemical nature of the food. Instead, it makes the food smaller to increase both surface area and mobility. It includes mastication, or chewing, as well as tongue movements that help break food into smaller bits and mix food with saliva.

Detailed explanation-4: -The motions that occur in the stomach during digestion are referred to as churning movements. The churning movements of the stomach’s muscular wall thoroughly combine the meal with the acidic gastric fluid. Stomach-churning is an unpleasant, agitated sensation produced by a number of stomachs and intestinal problems.