MEDICAL
STOMACH
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Churning of the stomach
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Saliva
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Either A or B
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None of the above
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Detailed explanation-1: -The large pieces of food that are ingested have to be broken into smaller particles that can be acted upon by various enzymes. This is mechanical digestion, which begins in the mouth with chewing or mastication and continues with churning and mixing actions in the stomach.
Detailed explanation-2: -Mechanical digestion occurs as layers of muscle in the stomach lining contract to produce a mixing and churning motion. Chemical digestion is carried out by stomach juices that contain enzymes and hydrochloric acid. When the food has been turned into liquid form, it moves onto the small intestine.
Detailed explanation-3: -Answer and Explanation: Mastication is an example of mechanical digestion as it involves the physical breakdown of food (crushing or grinding) with the use of teeth.