EXCRETION IN HUMAN BEINGS

EXCRETION IN HUMAN BEINGS

Human beings have three excretory organs. They are

1. LUNGS for the excretion of CO2.
2. SKIN for the excretion of Water and Salt.
3. KIDNEY for the excretion of Urea.

EXCRETORY SYSTEM OF HUMAN BEINGS

The excretory system consist of a pair of kidneys, a pair of ureters, urinary bladder and urethra. Each kidney has a number of excretory units called nephrons.

1.KIDNEY

The excretory system of human beings consist of a pair of kidney, Kidneys are responsible to remove unwanted substances like urea, salt waste etc from our blood and excrete these waste in the form of yellowish liquid called Urine.

2. URETERS

The excretory system of human being consist of a pair of ureters, one from each kidney. Ureters are responsible to carry urine from Kidney to urinary bladder.

3. URINARY BLADDER

Urinary bladder is a bag like structure which store urine till we go to toilet.

4. URETHRA

Urethra is a body organ which excrete the urine present in the Urinary bladder.