Question

Choose the correct statement(s):

• A. There are three parts of stomach named as cardia, body and pylorus.
• B. Pylorus has two regions. Pylorus opens into small intestine through the pyloric orifice.
• C. Stomach is the food reservoir and it digests food only chemically with the help of enzymes.
• D. Pyloric sphincter is located in the pyloric orifice. It is made up of a thick band of circular muscles.

Answer 1

Answer: (B), (D)

The correct options are
B Pylorus has two regions. Pylorus opens into small intestine through the pyloric orifice.
D Pyloric sphincter is located in the pyloric orifice. It is made up of a thick band of circular muscles.

The two statements are incorrect due to following reasons:

• Stomach is a J-shaped organ which is situated obliquely below the diaphragm. It has four parts which are named as cardia, fundus, body and pylorus. Fundus is the region situated above the opening of the stomach.
• Stomach is an organ which can expand to hold large amount of food. It digests food both mechanically and chemically by churning and mixing of food and by secretion of enzymes, respectively.