Iqraabout 3 years ago

Human digestive system

The human digestive system consists of the gastrointestinal tract plus the accessory organs of digestion (the tongue, salivary glands, pancreas, liver, and gallbladder). Digestion involves the breakdown of food into smaller and smaller components, until they can be absorbed and assimilated into the body. The digestive system has three main functions relating to food: digestion of food, absorption of nutrients from food, and elimination of solid food waste