The role of water in the body
презентация к уроку

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The body as a whole is about 60 per cent water.

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About 25 per cent of bone weight is water.

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The liver is 70 per cent water, tne muscles are 75 per cent.

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Blood is 80 per cent water and kidney, a solid organ, is also 80 per cent water.

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In fact the most watery tissue of the body is grey matter of the brain, which is 85 per cent water .

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The body loses about 1.5 litres of water daily .

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When water loss is one per cent of the body weight, the sensation of thirst is experienced.

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Thirst is more uncomfortable, than is hunger.

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The limit of human endurance of thirst is reached in a few days, but endurance of hunger proceeds for weeks. Few days Few weeks