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biology 0610printed 160 · PDF 160
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printed 160 · PDF 160
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Has 2 main parts: the cortex and medulla
Kidney is made up of a lot of tiny tubules known as nephrons.
Each nephron starts in the cortex and loops to medulla, then back to cortex and then
to medulla again.
Leading from each kidney is a tube called ureter
Ureter carries urine from kidneys to the bladder.
Urea
Urea is also one of the waste products produced in the liver of humans.
Urea is removed from the blood through the kidneys.
Urea is combined with excessive ions and water from body to form urine
Urine then travels through the ureter, into the bladder where it is stored. The sphincter
muscles at the entrance of the urethra relax and the urine flows out of the urethra.
Formation of Urea
Produced in Liver