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ch. 7 vocab urinary
ch. 7 urinary system vocab
vocab | meaning |
---|---|
arteriole | small artery |
bowman capsule | cup-shaped like capsule surrounding each glomerulus |
calyx or calix | cup-like collecting region of the renal pelvis |
catheter | tube for injecting or removing fluids |
cortex | outer region |
creatinine | a waste product of muscle metabolism |
electrolyte | a chemical that carries an electrical charge in a solution |
erythropoietin (EPO) | a hormone secreted by the kidney to stimulate the production of red blood cells |
filtration | passive process whereby some substance, but not all, pass through a filter or other material |
golmerulus | tiny ball or capillaries in cortex of kidney |
hilum | depression or pit in that part of an organ where blood vessels and nerves enter and leave |
kidney | one of two bean-shaped organs located behind the abdominal cavity on either side of the backbone in the lumbar region |
meatus | opening canal |
medulla | inner region |
micturition | urination; act of voiding |
nephron | the combination of golmerulus and renal tubule where filtration, reabsorption, and secretion take place in the kidney |
nitrogenous waste | substance containing nitrogen and excreted in urine |
potassium (K+) | a salt (electrolyte) secreted from the bloodstream into the renal tubules to leave the body in urine |
reabsorption | in this process the renal tubules return materials necessary to the body back into the bloodstream |
renal artery | carries blood to the kidney |
renal pelvis | central collecting region in the kidney |
renal tubule | microscopic tube in the kidney where urine is formed after filtration |
renal vein | carries blood away from the kidney |
renin | an enzymatic hormone synthesized, stored, and secreted by the kidney |
sodium (Na+) | a salt regulated in the blood and urine by the kidneys |
trigone | triangular area in the bladder where the ureters enter and the urethra exits |
urea | major nitrogenous waste product excreted in urine |
ureter | tube leading from each kidney to the bladder |
urethra | tube leading from the bladder to the outside of the body |
uric acid | nitrogenous waste excreted in the urine |
urinary bladder | sac that holds urine |
urination | process of expelling urine; also called micturition |
voiding | emptying of urine from the urinary bladder |