2. Content
• Organs And Functions Of Excretory System
• Histology Of Kidney
• Steps Involves In Urine Formation
• Renal Diseases
• Skin Structure And Function
• Role Of Skin In Excretion
• Skin Diseases
• Role Of Lungs In Excretion
3. What is excretion ?
•Excretion is process of removing
waste materials produced by the
body
•Kidneys – filter out excess water
and urea
•Skin – excretes water, as sweat,
which contains some trace
chemical wastes, including urea.
•Lungs – filter out carbon dioxide,
CO2, from the blood.