Excretion Flashcards
Excretion
Is one of the characteristics of all living things
Excretion
The removal of toxic chemical substances, which are made in the body during metabolism
Excretory organs
Kidney, lungs and skin
Kidneys
Filter urea and salts from our blood. This process is called filtration
Renal artery
Carries blood to kidney
Renal vein
Carries blood from kidney
Kidney
Filters blood to remove urea
Ureter
Transports urine to bladder
Bladder
Stores urine
Urethra
Releases urine
Sphincter muscle
Controls urethra opening and closing
Urea
Is toxic, is produced in the liver from excess protein
Lungs
Carbon dioxide and water are waste products of the process of respiration in all the cells of the body
Skin
Water, salt and a tinny amount of urea is excreted as sweat through these pores