THE EXCRETORY SYSTEM
As the body parts do their work, waste material are produced. These waste materials must be removed from the body, otherwise we will fall ill. This work is done by the excretory system. NOTE; Excretion is the process of removing waste products from the blood and converts them into urea. Urea is then carried to the kidneys for excretion . The skin takes part in exretion when a person sweats. Glands in the inner layer of the skin produce sweat.Sweat is mostly water. Sweat tastes salty because it contains mineral salt the body does not need . There is also a tiny amount of urea in sweat. Sweat is excreted onto the outer layer of the skin . The sweat can evaporate for a person to feel cold.
Parts of the Excretory organ include;
1. Veins
2. Ureter
3, bladder
4, urethra
5, Sphincter
6, left kidney
END OF LESSON EXERCISE
Briefly explain the main function of the excretory system organ in the human body.
EXERCISE 26TH AUGUST, 2020
Choose the correct from the following questions.1. Sweat tastes salty. True / False
2. The outer layer of the body is called...
A. Skin. B. Mat
3. Sweat is mostly water. True / False
4. ....... Is the process of removing waste product from the blood and convert it into urea.
A. Plantation b. Excretion
5....... In the inner layer of the skin produced sweat. A. Liver. B. Glands
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