Define peristalsis. What is the direction of normal peristalsis? [2 MARKS]

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Definition: 1 Mark
Direction: 1 Mark

Peristalsis is a series of wave-like muscle contractions that help in moving food to different processing areas in the digestive tract.
The process of peristalsis begins in the oesophagus when a bolus of food is swallowed and moves till the anus.

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What is meant by peristalsis? What is the direction of normal peristalsis? [2 MARKS]

Define the following terms :

(a) Peristalsis

(b) Omnivore

(d) Kilocalorie

(e) Basal metabolic rate

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