PATHOLOGY MCQ
BILIARY
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chemicals help break down food
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Teeth rip food into smaller pieces
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Peristalsis moves food through the GI tract
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Saliva helps with the break down of foods
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Detailed explanation-1: -Mechanical digestion in the oral cavity consists of grinding of food into smaller pieces by the teeth, a process called mastication. Chemical digestion in the mouth is minor but consists of salivary amylase (ptyalin, or alpha-amylase) and lingual lipase, both contained in the saliva.
Detailed explanation-2: -Chewing or mastication is the process by which food is crushed and ground by teeth. It is the first step of digestion and it increases the surface area of food to allow a more efficient break down by enzymes.
Detailed explanation-3: -Your teeth are also part of the digestive process. Teeth break down food for swallowing and further digestion. The incisors, located in the middle front of the lower and upper jaws, cut and gnaw pieces of food. The molars, in the back of the mouth, grind and chew.