HUMAN NUTRITION

Detailed explanation-1: -From the small intestine, undigested food (and some water) travels to the large intestine through a muscular ring or valve that prevents food from returning to the small intestine. By the time food reaches the large intestine, the work of absorbing nutrients is nearly finished.

Detailed explanation-2: -Once the stomach completes its role in the digestive process, its contents slowly pass into a short tube at the base of the stomach. This is called the duodenum. It’s the first part of the small intestine.

Detailed explanation-3: -Duodenum: This short section is the part of the small intestine that takes in semi-digested food from your stomach through the pylorus, and continues the digestion process. The duodenum also uses bile from your gallbladder, liver, and pancreas to help digest food.

Detailed explanation-4: -Figure 2: The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation. Some chemical digestion occurs in the mouth. Some absorption can occur in the mouth and stomach, for example, alcohol and aspirin.