Question

With the help of a labelled diagram, describe now the human body gets rid of its wastes through excretion.

Answer 1

The human excretory system comprises of a pair of kidneys, two tubes called ureters, a urinary bladder and a urethra. Kidneys help in removing the waste products in the blood. When blood enters the kidney, useful substances are filtered and absorbed back into the blood by nephrons in kidneys. Waste products get dissolved in water and urine is formed, which travels through the tubular ureters. Urine gets stored in the urinary bladder, which opens into the urethra. Urine passes out of the body through the opening at the end of urethra.