Test: Teeth and Digestive System - 1 - Class 4 MCQ

Humans have two sets of teeth: temporary teeth, also known as milk teeth, which are replaced by permanent teeth. The temporary teeth typically emerge during infancy and fall out to make way for the larger, permanent teeth that develop as the child grows.

Children typically start losing their temporary teeth around the age of 6. This process is a natural part of growing up, as the permanent teeth begin to emerge to replace them.

Incisors are the sharp, flat teeth located at the front of the mouth, and they are specifically designed for cutting and biting into food. There are eight incisors in total, four in each jaw.

An adult typically has 12 molars, with six in each jaw. Molars are larger than premolars and are essential for grinding and chewing food thoroughly before swallowing.

Enamel is the hardest substance in the human body. It covers the crown of the tooth and protects it from decay, making it essential for maintaining dental health.

If food particles are not removed from teeth, they can lead to the formation of plaque, which contains germs. These germs convert sugars into acid, attacking the enamel and potentially leading to cavities.

The liver produces bile, which is a digestive juice that helps in the digestion of fats. Bile is released into the small intestine, aiding the digestion process.

The large intestine absorbs water from undigested food. This process helps to form waste material (faeces) that is eventually expelled from the body.

It is recommended to visit the dentist every six months for regular check-ups and cleanings. This helps in early detection of any dental issues and maintaining oral health.

Rinsing your mouth with water after meals helps remove food particles that may be stuck between your teeth, reducing the risk of plaque buildup and tooth decay.