The answer can be explained as:
1. Total Energy Expenditure is defined as the amount of calories burned or used up by the body in one day. It is calculated as the addition of 30% of the Basal Energy Expenditure to the Basal Energy Expenditure of sedentary activity.
2. Bolus is defined as the mixture of food and saliva, which is formed in the mouth during the process of digestion. The chewing of food substances and mixing up with saliva forms a ball-like structure known as bolus.
3. Chyme is defined as the partially digested food substance in the stomach. It is acidic as it consists of gastric juices and partly digested food.
4. Basal metabolic rate is defined as the number of calories burned when the body performs basic life-sustaining processes. It is sometimes referred to as the Resting Metabolic Rate.
5. Peristalsis is a series of contractions of muscles, which take place in the digestive tract. The peristaltic movement is necessary to move the food substances down the digestive tract.
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