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24 Cards in this Set

  • Front
  • Back
a waste product of muscle metabolism; nitrogenous waste excreted in urine
major nitrogenous waste product excreted in urine
uric acid
nitrogenous waste excreted in the urine
Bowman capsule
cup-shaped capsule surrounding each glomerulus
renal tubule
microscopic tube in the kidney where urine is formed after filtration. In the renal tubule, the composition of urine is altered by the processes of reabsorption and secretion
carries blood away from the kidney
Renal Vein
Potassium (K+)
a salt (electrolyte) secreted from the bloodstream into the renal tubules to leave the body in urine
Sodium (Na+)
a salt (electrolyte) regulated in the blood and urine by the kidneys
the combination of glomerulus and renal tubule where filtration reabsorption, and secretion take place in the kidney
renal pelvis
basin-like area in the central region of the kidney
calyces or calices (singular: calyx or calix)
are small, cup like regions of the renal pelvis
Urea is formed where?
In the liver. It is a major nitrogenous waste product excreted in urine
an enzymatic hormone synthesized, stored and secreted by the kidney; it raises blood pressure by influencing vasoconstriction (narrowing of blood vessels)
erythropoietin (EPO)
a hormone that stimulates red blood cell formation in the bone marrow

-poietin = substance that forms
a chemical that carries an electrical charge in a solution. examples are potassium (K+) and sodium (Na+)
passive process whereby some substances, but not all, pass through a filter or other material. blood pressure forces materials through the filter. about 180 quarts of fluid are filtered from the blood daily, but the kidney returns 98 to 99 percent of the water and salts. only about 1.5 quarts (1500mL) of urine are excreted daily
triangular area in the bladder where the ureters enter and the urethra exits
a depression in the medial border of the kidney. Nerves & blood vessels pass through it
urination; process of expelling (avoiding) urine
As blood passes through the glomeruli, its thin walls permit water, salts, & urea (with other nitrogenous wastes such as______) to leave the bloodstream.
creatinine & uric acid
The __________which surrounds each glomerulus, collects the nitrogenous wastes (urea, uric acid & creatinine)
bowman capsule
Attached to each bowman capsule is a long twisted tube called_____
renal tubule
Final process in forming urine is ___________ of some toxic substances from the blood (acids, drugs, & potassium).
All collecting tubules lead to the _______, a basin like area in the central part of the kidney.
renal pelvis