the excretory system
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what is the role of the excretory system
to remove excess and unwanted substances from the body and assists in the control of water balance in the body
what are the waste products of the excretory system
nitrogenous waste and water
what is nitrogenous waste
is made from the brake down of proteins and is the yellow colour in urine
what two things make up the excretory system
the kidneys and the urinary tract and blood stream
what is the function of the kidneys in the excretory system
filtering blood and removing nitrogenous waste to be excreted
what are the parts of the kidney
ureter-the tube leading down, the renal artery and renal vein, the renal cortex-darker part, outside and the renal medulla-inside
what make up the urinary tract
ureters, bladder and urethra
how is blood devilered to the kidneys
via the renal arteries
what is a nephron
the kidneys contains millions of these, they contain the bowmans capsule, proxim, cortex and loop of henle
what happens in the bowmans capsule
filtration
what happens in the loop of henle
it reabsorbs water, maintains hypertonic conditions within the medulla of the kidney