ANIMAL PHYSIOLOGY
NERVOUS SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The human digestive system is approximately 900 cm. long. Food is moved through the digestive tract primarily by-
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bile produced by the pancreas
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the enzymes amylase and pepsin
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muscular contractions
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hydrochloric acid in the stomach
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Explanation:
Detailed explanation-1: -Explanation: C. Because The movement of organ walls-called peristalsis-propels food and liquid through the GI tract and mixes the contents within each organ. Peristalsis looks like an ocean wave traveling through the muscle as it contracts and relaxes.
Detailed explanation-2: -Peristalsis. Peristalsis moves food through the digestive tract with alternating waves of muscle contraction and relaxation.
Detailed explanation-3: -Peristalsis is a series of wave-like muscle contractions that move food through the digestive tract. It starts in the esophagus where strong wave-like motions of the smooth muscle move balls of swallowed food to the stomach.
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