NUTRITION
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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____ the contractions of the muscular coat
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____ the digestive glands secrete digestive juices
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____ it has many blood vessels.
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None of the above
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Detailed explanation-1: -Peristalsis is the wave of constriction caused by the circular muscles of gut pushing the food along.
Detailed explanation-2: -A series of normal coordinated, rhythmic muscle contractions, that occurs automatically to move food through the digestive tract is called peristalsis.
Detailed explanation-3: -Peristalsis is rhythmic contraction and relaxation of muscles of the esophagus, intestine and stomach which moves the food throughout the alimentary canal.
Detailed explanation-4: -Peristalsis is alternate and rhythmic contraction and relaxation of muscles in the alimentary canal from the oesophagus to anus. This facilitates the easy and smooth movement of food during the process of digestion.
Detailed explanation-5: -Stomach: An organ with strong muscular walls, the stomach holds the food and mixes it with acid and enzymes that continue to break the food down into a liquid or paste.