ANATOMY

Detailed explanation-1: -Food is our fuel, and its nutrients give our bodies’ cells the energy and substances they need to work. But before food can do that, it must be digested into small pieces the body can absorb and use. The first step in the digestive process happens before we even taste food.

Detailed explanation-2: -Why is digestion important? Digestion is important for breaking down food into nutrients, which the body uses for energy, growth, and cell repair. Food and drink must be changed into smaller molecules of nutrients before the blood absorbs them and carries them to cells throughout the body.

Detailed explanation-3: -The digestive system converts the foods we eat into their simplest forms, like glucose (sugars), amino acids (that make up protein) or fatty acids (that make up fats). The broken-down food is then absorbed into the bloodstream from the small intestine and the nutrients are carried to each cell in the body.

Detailed explanation-4: -Surface area Chewing breaks the large into the small. The mechanical digestion of food in the mouth involves converting bite-sized pieces of food into smaller particles. This has the effect of increasing the surface area of the food particles and allowing saliva to be thoroughly mixed with them.

Detailed explanation-5: -Chemical and mechanical digestion are the two methods your body uses to break down foods. Mechanical digestion involves physical movement to make foods smaller. Chemical digestion uses enzymes to break down food.