Excretion

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Excretion

The process of removal of waste from the body is called Excretion.
Ex- skin -Sweating

Excretion in plants

Stomata= Gaseous exchange
Stem - lenticels =Waste Excrete

Excretory system in Human

1) Kidneys
2) Ureter
3) Urinary bladder
4) Urethra

Kidneys

1) A pair of kidneys are present below the ribs by the side vertebrae.
2) Each Kidney is bean-shaped.
3) Outer kidney is known as the cortex.
4) Inner kidney is known as the medulla. 
5) Each kidney has a gland on the apex called the adrenal gland.
6) Each kidney is made up of millions of nephrons.
7) The main function of the kidney is the filtration of blood.

Ureter

These are the tube-like structure that carries urine from the kidney to the urinary bladder.

Urinary bladder

A triangular pouch that stores urine for some time before passing it out.

Urethra - Opening to pass urine.


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