MEDICAL
GALLBLADDER AND EXCRETORY SYSTEM OF THE LIVER
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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The food is swallowed, and enters the esophagus.
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The salivary glands produce saliva. Enzymes in the saliva begin the chemical breakdown converting the starches to sugar.
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The teeth tear and grind the food into small pieces.
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None of the above
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Detailed explanation-1: -First, the tongue pushes the food into the throat. Next, the epiglottis, a small but important flap of tissue, folds over the voice box at the top of the windpipe. This keeps food from going down the wrong way. Finally, the esophagus contracts and moves food toward the stomach.
Detailed explanation-2: -The epiglottis is usually upright at rest allowing air to pass into the larynx and lungs. When a person swallows the epiglottis folds backward to cover the entrance of the larynx so food and liquid do not enter the windpipe and lungs. After swallowing the epiglottis returns to its original upright position.
Detailed explanation-3: -When you swallow, food and liquid first move from your mouth to your throat (pharynx). A small muscular flap called the epiglottis closes to prevent food and liquid from going down the “wrong pipe”-your windpipe (trachea).
Detailed explanation-4: -Swallowing. During swallowing, the epiglottis bends backwards, folding over the entrance to the trachea, and preventing food from going into it.