NURSING EXAM QUESTIONS
NUTRITION
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Question
[CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
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Chemical breakdown of food
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Physical breakdown of food
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Elimination of waste
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Absorption
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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: -Your teeth are an essential part of your digestive system. They help you bite, tear and grind food up before swallowing it.
Detailed explanation-3: -Food is crushed into small pieces by the teeth. The food is then mixed with saliva and the enzyme amylase (found in saliva) breaks down starch into sugars. The tongue helps in thorough mixing of food with saliva. Food goes directly through the oesophegus to the stomach, there is no breakdown of food in mouth .