Same chapter3 marksDifficulty: Medium
State two functions of bile, and say why bile is not called a digestive juice.
The Digestive System
3 marksDifficulty: Medium
What is peristalsis, and why is it important?
Original Khojo Papers practice question — not from a past board paper.
Answer
Peristalsis is the wave of alternate contraction and relaxation of the circular and longitudinal muscles of the alimentary canal that pushes the food along. It is important because it moves the food from one region to the next and mixes it with the digestive juices, and it works independently of gravity, which is why a person can swallow while lying down.
No citable source has been recorded for this record. Treat it as practice material, not as fact.
Explanation
It begins in the oesophagus and continues to the rectum.
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