THORAX ABDOMEN AND PELVIS

Detailed explanation-1: -In digestion, a bolus (from Latin bolus, “ball") is a ball-like mixture of food and saliva that forms in the mouth during the process of chewing (which is largely an adaptation for plant-eating mammals).

Detailed explanation-2: -Swallowing: Ingestion 2 The food is formed into a small ball called a bolus, which is pushed to the back of the mouth by the tongue. Involuntary muscle contractions in the pharynx then push the bolus down towards the oesophagus.

Detailed explanation-3: -The correct option is A bolus. Food in the mouth is chewed and mixed with saliva with the help of teeth and tongue. This converts it into a soft moist ball known as bolus that is passed through oesophagus to the stomach.

Detailed explanation-4: -In digestion, a bolus (from Latin bolus, “ball") is a mass of food that (with animals that can chew) has been chewed at the point of swallowing.