| A | B |
|---|
| kidney | the primary organ of the urinary system |
| renal cortex | the outer layer of the kidney which contains the glomerulus of the nephrons |
| renal medulla | the inner layer of the kidney which contains the tubuls and collecting ducts of the nephrons |
| nephron | the functional unit of the kidney where filtering, reabsorption and secretion occurs |
| glomerulus | a cluster of capillaries surrounded by a fibrous capsule where filtration occurs |
| proximal convoluted tubule | the first section of the renal tubule where most reabsorption occurs |
| Loop of Henley (nephron loop) | the central section of the renal tubule where most water is reabsorbed |
| distal convoluted tubule | the final section of the renal tubule where sodium is reabsorbed and hydrogen ions are secreted |
| collecting duct | the tube which receives urine from multiple nephrons |
| reabsorption | the movement of substances out of the renal tubules into capillaries |
| secretion | the movement of substances into the renal tubules from the capillaries |
| urine | liquid produced by the kidneys which removes water soluble waste from the body |
| ureter | tube which connects the kidney to the bladder |
| urinary bladder | hollow, muscular organ which stores urine |
| urethra | tube which connects the bladder to outside the body |
| glomerular capsule (Bowman's capsule) | the expanded end of the renal tubule which surrounds the glomerulus and collects the filtrate |
