Page 39 - Viva ICSE Science 4 : E-book

• Limit eating foods that are rich in fat and
sugar.

• Eat slowly and chew it properly.

• Eat small portions of meals at regular

intervals. Do not overeat.

• Drink plenty of water to keep your excretory

system functioning properly.

• Exercise regularly to remove wastes from
your body in the form of sweat.

TIME TO REVISE

Match the following.

Column A Column B
1. Urethra (a) stores urine before it is excreted out
of body.
2. Urinary bladder (b) carry urine from the kidneys to the
bladder.

3. Kidney (c) main excretory organ.
4. Ureters (d) carries urine to the outside of the
body.

Need of water

Water is very essential for every living being. Water helps in absorption

of food and nutrients in the intestine, which are finally utilised by our
body. Without water our body cannot absorb nutrition.

Water is also required by large intestine to form faeces from the

undigested food and to expel wastes out of the body. Body fl ushes

out wastes in the form of urine and sweat also because of water.

Not drinking suffi cient water causes constipation, where it becomes diffi cult to expel
faeces out of the body. Levels of salt and waste may increase in the body because of

decreased excretion. This causes many health problems. Thus, drinking water is very
important to maintain a healthy life.

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