Short-answer type questions :
1. What is peristaltic movement?
2. Why is digestion of food essential?
3. What do you understand by the terms egestion and ingestion?
4. What are villi? Where are they located?
5. What is alimentary canal?
Answers
Answer:
Peristalsis is a series of wave-like muscle contractions that moves food to different processing stations in the digestive tract. The process of peristalsis begins in the esophagus when a bolus of food is swallowed.
Answer:
1.Peristalsis is a radially symmetrical contraction and relaxation of muscles that propagates in a wave down a tube, in an anterograde direction.
2.Digestion is important because your body needs nutrients from food and drink to work properly and stay healthy. ... Your digestive system breaks nutrients into parts small enough for your body to absorb and use for energy, growth, and cell repair.
3.The main difference between ingestion and egestion is that ingestion is the intake of food into the body whereas egestion is the elimination of wastes out of the body. Ingestion occurs through the mouth in animals. ... The elimination of wastes of the digestion occurs through the anus in animals.
4.Villi are small finger-like projections found inside the inner walls of the small intestine. They v increase the surface area for absorption of the digested food. Each villus has a network of thin and small blood vessels close to its surface. The surface of the villi absorbs the digested food materials.
5.noun
the long passage inside your body which food moves along, from the mouth to the opening where it leaves your body as waste.
Explanation:
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