Question

Bolus is formed in the __________.

• A. Mouth
• B. Oesophagus
• C. Stomach
• D. Intestine

Answer 1

The correct option is A

Mouth

The correct option is option (A):

Explanation of the correct option:

1. Bolus is a semi-digested food which formed in the mouth.
2. The process of intake of food inside the body through the mouth is known as ingestion.
3. After ingestion, the solid hard materials are broken down into smaller pieces or chewed with the help of teeth.
4. These food materials get mixed with the digestive juice called saliva secreted from the salivary gland by the movement of the tongue.
5. Thus, this moist mixture forms ball-like structures called a bolus.

Explanation of the incorrect option:

Option (B):

Oesophagus is a narrow tube-like structure that receives food from the mouth and carries the food to the stomach.

Option (C):

The stomach is the widest part of the alimentary canal which digest protein and make peptones with the help of gastric enzymes secreted by the stomach.

Option (D):

There are two types of intestines namely the small intestine and large intestine. The small intestine deals with the digestion and absorption of nutrients while the large intestine deals with the absorption of water.

Final answer: Bolus is formed in the mouth.