NEET PG DENTAL EXAM

Detailed explanation-1: -Mechanical digestion in the oral cavity consists of grinding of food into smaller pieces by the teeth, a process called mastication. Chemical digestion in the mouth is minor but consists of salivary amylase (ptyalin, or alpha-amylase) and lingual lipase, both contained in the saliva.

Detailed explanation-2: -Digestion: Mechanical and Chemical Changes • Mechanical and chemical actions make up the digestive process. After hydrolysis, food is then further digested in the stomach after being mixed with stomach acid by stomach . Mechanical digestion is called mastication, or the chewing and grinding of food into smaller pieces.

Detailed explanation-3: -Mechanical digestion is physical digestion done by teeth. Churning of food into smaller substances is an example of mechanical digestion. Breaking down food into a smaller substance is a helpful process so that food can easily undergo chemical digestion.

Detailed explanation-4: -The two mechanical digestion processes that occur in the small intestine are peristalsis and segmentation. Both these processes involve contractions of gastrointestinal muscles which also contribute to the physical breakdown of food.