Question

explain the process of digestion of food in human body

Answer 1

The process of digestion begins from the mouth and is completed in the small intestine.  When we consume food, it travels from our mouth and reaches our stomach through a long tube called as an alimentary canal or the gastrointestinal tract.

This alimentary canal or gastrointestinal tract begins from the mouth cavity and continues into the pharynx,  stomach, large intestines, and finally stops at the anus. During the movement of food particles from mouth to the stomach and to the small intestine, it gets digested gradually as they travel through various compartments of the gastrointestinal tract. The process of digestion begins from the mouth cavity and ends in the anus.

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Answer 2

The mouth is the beginning of the digestive tract. In fact, digestion starts here as soon as you take the first bite of a meal. Chewing breaks the food into pieces that are more easily digested, while saliva mixes with food to begin the process of breaking it down into a form your body can absorb and use.

Also called the pharynx, the throat is the next destination for food you've eaten. From here, food travels to the esophagus or swallowing tube.

Esophagus

The esophagus is a muscular tube extending from the pharynx to the stomach. By means of a series of contractions, called peristalsis, the esophagus delivers food to the stomach. Just before the connection to the stomach there is a "zone of high pressure," called the lower esophageal sphincter; this is a "valve" meant to keep food from passing backwards into the esophagus.