Question

Which of the following statements is/are incorrect?
(i) Absorption of simple sugar, alcohol, some water and medicines takes place in the stomach.
(ii) Maximum water absorption occurs in the large intestine.
(iii) Small intestine is the major site of digestion and absorption of food.
(iv) Fatty acid and glycerol are absorbed by lacteals.
(v) Nothing is absorbed in the mouth and large intestine.
A. (i), (iv) and (v)
B. (v) only
C. (iv) only
D. (ii) and (iii)

Answer 1

Hint: The digestive system of the human body consists of a group of organs that work together to convert food into energy for the body. Anatomically, the digestive system consists of the digestive tract and auxiliary organs such as the liver, pancreas and gall bladder. Digestion starts in the mouth and ends at the anus.

Complete answer: Digestive system of the human body consists of the mouth, salivary glands, tongue, teeth, oesophagus, stomach, small intestine and the large intestine. The digestion process starts from the mouth and ends at the anus. The GI tract extends to a distance of about nine meters. Most of the gastrointestinal tract is the small intestine and the large intestine. Maximum absorption of nutrients takes place in the small intestine. In the mouth, the carbohydrates present in the food are broken down into disaccharides with the action of salivary amylase. Water and vitamins are absorbed in the large intestine. The main digestive organ is the stomach. There are millions of gastric glands embedded in the lining. There are many specialized cells in the digestive tract. These include various stomach cells, taste buds, pancreatic cells, enterocytes, and micro fold cells. Some parts of the digestive system are also part of the urinary system, including the large intestine.
Thus, option (B) is correct.

Note: Food does not require gravity to enter the stomach. When you eat something, the muscles in the oesophagus contract and relax in a specific movement called peristalsis, which pushes the food out of the oesophagus into the stomach.