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Explain each of the following terms in relation to the digestive system: (i) bile (ii) peristalsis - Junior Cycle Home Economics - Question 12 - 2013
Question 12
Explain each of the following terms in relation to the digestive system: (i) bile (ii) peristalsis
Worked Solution & Example Answer:Explain each of the following terms in relation to the digestive system: (i) bile (ii) peristalsis - Junior Cycle Home Economics - Question 12 - 2013
Step 1
(i) bile
Answer
Bile is a digestive fluid produced by the liver. Its primary function is to break up large fat molecules into smaller pieces, which facilitates easier digestion and absorption of fats by the intestines. Bile contains bile salts, which are crucial in emulsifying fats, thus enhancing the action of digestive enzymes.
Step 2
(ii) peristalsis
Answer
Peristalsis is a series of wave-like muscle contractions that moves food through the digestive tract. This process involves the continuous contraction and relaxation of smooth muscles in the gut, helping to push contents from the esophagus through the stomach and into the intestines. It is essential for the proper movement of food and waste through the digestive system.