Question

explain the mechanism of digestion on human body.
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Answer 1

In chemical digestion, enzymes break down food into small molecules the body can use....After undergoing mastication and starch digestion, the food will be in the form of strach round sulrry mass called as a bolus. It will then travel down the esophagus and into the stomach by the action of peristalsis.

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Answer 2

Answer:

Explanation:

Once you have eaten, your digestive system (Figure 2.3.1) breaks down the food into smaller components. Another word for the breakdown of complex molecules into smaller, simpler molecules is "catabolism". To do this, catabolism functions on two levels, mechanical and chemical. Once the smaller particles have been broken down, they will be absorbed into the blood and delivered to cells throughout the body for energy or for building blocks needed for cells to function. The digestive system is one of the eleven organ systems of the human body and it is composed of several hollow tube-shaped organs including the mouth, pharynx, esophagus, stomach, small intestine, large intestine (or colon), rectum, and anus. It is lined with mucosal tissue that secretes digestive juices (which aid in the breakdown of food) and mucus (which facilitates the propulsion of food through the tract). Smooth muscle tissue surrounds the digestive tract and its contraction produces waves, known as peristalsis, that propel food down the tract. Nutrients as well as some non-nutrients are absorbed. Substances such as fiber get left behind and are appropriately excreted.