MEDICAL
RECTUM AND ANUS
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Break down the food to make it easier to swallow
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Slows down jaws
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Nothing
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Neither
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Detailed explanation-1: -The food is ground up by the teeth and moistened with saliva to make it easy to swallow. Saliva also has a special chemical, called an enzyme, which starts breaking down carbohydrates into sugars.
Detailed explanation-2: -Spit moistens it for easy swallowing. A digestive enzyme in saliva called amylase (AH-meh-lace) starts to break down some carbohydrates (starches and sugars) in the food. Muscles in the tongue and mouth work together to swallow the food and move it into the throat (pharynx).
Detailed explanation-3: -You use your voluntary nervous system to start a swallow. Your involuntary nervous system takes over your swallowing once the liquid or food enters the top of your esophagus. Stretching from food or liquid stimulates the smooth muscles that make up the walls of your esophagus.
Detailed explanation-4: -Saliva is an alkaline fluid which softens food, moistens the mouth and helps swallowing. Saliva also contains an enzyme called amylase, which starts the breakdown of carbohydrate in the mouth.