Excretory System Yr9

Solid Waste

Indigestible remains of food, bacteria and cellular debris that the digestive system cannot break down or absorb, in the form of faeces

Excretion

Metabolic Waste

Produced by chemical reactions like respiration, hydrolysis, synthesis and neutralization, in the form of water, carbon dioxide, salts and urea

Aorta

Main artery supplying oxygenated blood to the body

Kidney

Two “bean-shaped” organs that filter blood and produce urine

Renal Artery

Supplies unfiltered (oxygenated) blood from the aorta directly into the kidneys

Renal Vein

Carries filtered (deoxygenated) blood out of the kidneys

Ureter

Tubes that connect to the renal pelvis of each kidney to drain urine down to the bladder

Urethra

The channel that conducts urine from the bladder to the exterior environment

Urinary Bladder

A temporary storage organ for urine prior to elimination