Urinary System Flashcards
what are the 3 waste removal routes
respiratory, digestive, urinary
what is the most important system of waste removal
urinary
what does the respiratory system remove
CO2 and water vapor
what does the digestive system (intestine) remove?
digestive waste
what does the urinary system (kidneys) remove?
N compounds (urea), H2O, electrolytes (salts), toxins
functions of urinary system (3)
-remove waste products from blood
-transport waste by production of urine
-maintain homeostasis by regulating production fluid & electrolyte balance
nephro- & reno- refer to
kidneys
nephritis means
inflammation of kidneys
renal artery means
blood supply to the kidney
renal vein means
blood leaving kidney
parts of urinary system
-2 kidneys
-2 utreters
-1 urinary bladder
-1 uretha
Kidney function
make urine
Kidney characteristics
- bean shaped (heart shaped in horses)
-reddish brown
-smooth surface (except in cattle)
Hilus
-indented
-blood vessels, nerves, ureters enter & leave kidney at hilus
nephron
basic functional unit of kidney
functions of nephrons (3)
-filter blood
-reabsorb substances
-secrete waste products
urine characteristics
-light to amber yellow
-transparent in most animals, horses foggy
ureters function
-carry urine from kidneys to bladder
how does urine move from kidneys to bladder?
peristalsis of smooth muscle layer
urinary bladder functions
-collect, store, and release urine
what allows the bladder to expand
transitional epithelium
uretha function
carries urine from bladder out of the body
