Excretion in human(class X)

Excretory system of human beings and its mechanism

1. EXCRETION IN HUMAN

2. Main organs Two kidney s Two ureters Bladd er Urethra

3. Nephrons Larg e number of excre tory units are ca lled neph rons Nephr ons consis t of Bowman 's capsule Tubule Bowm an's cap sule con tains blood capil laries called GLOMERULUS . It 's fuction is to clean / filter the blood .

4. MECHAN ISM Dirty blood containing waste is carried out by renal artery which ente r glomerulus , the glomerulus filt er the waste then passes into bowman's capsule . Then it enter into tubul e of nephr on .

5. Then usef ul substance s like gluco se , all amino acid , salts and water reabsor bed into bloo d throu gh blood capillaries surrounding the tubules . The liq uid whic h left is URINE . Nephron carries the urin e into collecting duct of kidn ey then to ureter . Then it is stor ed in blad der which then pass thro ugh the ureth ra .

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