Question

Q1- Write a short note on
a) Tooth Decay
b) Diarrhoea


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Answer 1

Answer:

(a)    Dental caries or tooth decay causes gradual softening of enamel and dentine.  It begins when bacteria acting on sugars produce acids that softens or de-mineralizes the enamel.  Masses of bacterial cells together with food particles stick to the teeth to form dental plaque. Saliva cannot reach the tooth surface to neutralize the acid as plaque covers the teeth.  Brushing the teeth after eating removes the plaque before the bacteria produce acids. If untreated, microorganisms may invade the pulp, causing inflammation and infection

(b) Diarrhea is loose, watery stools (bowel movements). You have diarrhea if you have loose stools three or more times in one day. Acute diarrhea is diarrhea that lasts a short time. It is a common problem. It usually lasts about one or two days, but it may last longer. Diarrhoea can have causes that aren't due to underlying disease.