Excretion Flashcards
Toxic substances
Are poisonous and can harm the cells of the body if not removed
Excretion
Is one of the characteristics of all living things, Is the remove of toxic chemical substances, Which are made in the body during metabolism
3 excretory organs
Kidneys
Lungs
Skin
Kidneys
The kidneys filter (remove urea and salts) as they clean our blood, This process is called filtration
Renal artery
Carries blood to the kidney
Renal vein
Carries blood form the kidney, They are carried to the lungs by the blood to be excreted
Ureter
Transports urine to bladder
Bladder
Stores urine
Urethra
Releases urine
Urea
Toxic is produced in the liver from excess protein
Lungs
Cardbo dioxide and water are waster products of the process of respirator in all the cells of the body
Test for carbon dioxide
Limewater
Test for water
Cobalt chloride paper
Skin
Skin has sweat glands which lead to pores at the surface - water, salt and a tiny amount of urea is excreted as sweat through these pores