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4-3 Excretory System

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excretion
the process of removing wastes from the body
urea
chemical that comes from the breakdown of proteins
kidney
a major organ of the excretory system that removes urea and other wastes from the blood
urine
A watery fluid produced by the kidneys that contains urea and other wastes
ureters
The tubes that carry urine from the kidneys to the bladder.
urinary bladder
a sacklike muscular organ that stores urine until it is eliminated from the body
urethra
a small tube through which urine flows from the body
nephron
tiny filtering factories that remove waste from blood and produce urine
Liver
In excretory system it is known as a recycling facility that coverts part of the hemoglobin from old red blood cells into bile.