The Excretory System

Question 1

What is the excretory system responsible for ?

Answer 1

Purifying the body by eliminating waste matter

The metabolism of the body cells form toxic substances that, if retained, could poison the body

Question 2

List the organs of the excretory system

Answer 2

Alimentary canal

Lungs

Skin

Kidneys

Question 3

The alimentary canal

Answer 3

Removes residue of food through the anus by defecation

These residues take with them negligible heat and water, salts, special waste (I.e bile pigments)

Question 4

Lungs

Answer 4

Remove carbon dioxide

Water and heat may be lost if the air is dry or cold

Question 5

Skin

Answer 5

Removes excess heat not lost through breathing

Loss of heat is aided by the evaporation of sweat

Sweating removes some nitrogenous waste, salts and water

Question 6

Kidneys

Answer 6

Removes nitrogenous waste and excess salts and water that is not lost through sweating or breathing

Kidneys balance the system and remove metabolic waste

Their ducts are called excretory system