| A | B |
|---|
| arteriole | small artery |
| calyx or calix | Cup-like collecting region of the renal pelvis |
| cortex | Outer region of an organ |
| creatinine | waste product of muscle metabolism |
| erythropoietin (EPO) | Hormone secreted by the kidneys to stimulate RBC production |
| glomerulus | Tiny ball of capillaries |
| hilum | depression or pit in an organ where blood vessels and nerves enter and leave. |
| meatus | opening or canal |
| medulla | Inner region of an organ |
| micturition | act of voiding |
| Na+ | Sodium |
| K, K+ | Potassium |
| trigone | Triangular area at the base of the bladder (ureters enter and urethra leaves) |
| urea | Major nitrogenous waste product excreted by the kidney |
| ureter | tube leading from each kidney to the bladder |
| urethra | Tube leading from the bladder to the external meatus |
| urination | process of expelling urine |
| voiding | emptying of urine from the bladder. |
