Excretory System

Function?

Function

• removal of waste from the body• Blood enters the kidney and is cleaned and

filtered, then the urea is sent to the bladder to be removed from the body

via the urethra.

What waste?•Urea (a toxic substance) Nitrogen

containing waste made by the body when we digest protein.

• excess salts• And excess water • This forms Urine

What does the filtering?

• Nephrons = the blood-filtering units of the kidney

Nephron

Where does the waste go?

URINE REMOVAL FROM THE BODY:Kidneys Ureter Bladder Urethra

released from body

What if your kidneys don’t work?

• Dialysis = Blood is removed from the body, cleaned by a machine & then returned to the body

The Excretory System:Function:The basic function of the human excretory system is the

removal of waste from the cells and body. The skin excretes excess water and salts in the form of sweat. The lungs excrete carbon dioxide. The kidneys play a major role in excretion and remove waste products from the blood, maintain blood pH and regulate the water content of the blood and, therefore homeostasis.

So, the major Organs are:- Kidneys - Skin- Bladder - Lungs