NUTRITION
DIGESTIVE SYSTEM
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Our teeth start the process by chewing and grinding up each mouthful of food.
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The tongue works it into a ball-shaped mass, or bolus, for swallowing.
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Saliva uses specialized proteins called enzymes.
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It is sealed in the stomach by two ringlike sphincter muscles for several hours.
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Detailed explanation-1: -The stomach slowly empties its contents, called chyme, into your small intestine. Small intestine. The muscles of the small intestine mix food with digestive juices from the pancreas, liver, and intestine, and push the mixture forward for further digestion.
Detailed explanation-2: -Chewing and swallowing are two important processes that allow us to eat and drink. Chewing breaks down food into small pieces that can be safely swallowed. Swallowing is a complex process that involves many muscles. The tongue voluntarily pushes food into the back of the throat, called the pharynx.
Detailed explanation-3: -Mechanical Digestion 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-4: -Figure 2: The digestive processes are ingestion, propulsion, mechanical digestion, chemical digestion, absorption, and defecation. Some chemical digestion occurs in the mouth. Some absorption can occur in the mouth and stomach, for example, alcohol and aspirin.