The excretory system
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What is the main function of the excretory system?
-Remove waste from the body -Urea -Uric acid -Creatinine -Ammonia -Excess water, salt, and more
What is the function of the renal artery?
-Brings waste-filled blood from the body to the kidneys
What is the function of the renal vein?
-Transports clean blood away from the kidneys
What is the function of the Ureter?
-It carries urine from the kidneys to the bladder
What is the function of the bladder?
-A muscular sac that stores urine -When it’s full, the sphincter muscles at its base open and allow urine to be sent to the urethra
What is the function of the urethra?
-It carries urine from the bladder to the outside of the body -Males have a longer urethra than females
What are the functions of nephrons?
(Filtration units in the pyramids of the kidneys) -Filters waste from the blood -Waste leaves the blood and enters the nephrons.
What is the function of the glomerulus?
-Filters the blood inside the nephron
What is the function of the bowsman’s capsule?
-It holds/ contains the waste
What is the function of the collecting duct?
-Waste is at this point considered urine -It disposes the urine into the ureter
What is kidney failure?
-The loss of function of the kidneys
What is a bladder infection?
-Bacteria and microorganisms get into the bladder (causes infection) -More common in women because their urethra is shorter and closer to their anus -Treated with antibiotics -Symptoms: Smelly, cloudy urine, burning sensation when urinating.
What are kidney stones?
-Hard crystals of calcium and salts form in the kidney -They block the tubes and are very painful -Some can be urinated out, but bigger ones have to be surgically removed -Prevented by: Drinking more water -Symptoms include: Sharp pain on the side of the body or blood in urine