By e-Learning SMKDM

Friday 22 April 2011

Excretion in Human /Perkumuhan Manusia

Klik foto untuk lebih jelas by M
Excretion is the system to eliminate metabolic wastes from the human body

Importance of excretion
(a) prevent the accumulation of metabolic waste products and
toxic substance in the body
(b) maintain the normal composition of fluids in the body, including the pH and water contents

The examples of metabolic wastes are salts, urea, carbon dioxide and water

The three major human excretory organs are skin, lungs and kidney
By Ajey

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