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URIN: General
Urinary system anatomy and urination.
| Question | Answer |
|---|---|
| homeostasis | process by which organisms maintain a relatively stable internal environment |
| Urea | major waste product of protein metabolism |
| Creatinine | waste product of muscle metabolism |
| kidney | filters blood to remove waste products and excess water |
| renal | pertaining to the kidney |
| renal cortex | outer region of kidney that contains nephrons |
| renal medulla | inner region of kidney that contains urine collecting tubules |
| nephron | functional unit of the kidney |
| glomerulus | small network of capillaries encased in the upper end of a nephron; where the filtration of blood takes place |
| renal pelvis | funnel-shaped reservoir that collects the urine and passes it to the ureter |
| ureters | transport urine from the kidneys to the bladder |
| bladder | Elastic, hollow, muscular organ that provides temporary storage for urine. |
| urethra | tube leading from the urinary bladder to the outside of the body |
| urethral meatus | external opening of the urethra |
| voiding, micturition | process of excreting urine |
| nephrologist | physician who studies and treats diseases of the kidney |
| urologist | physician who studies and treats diseases of the urinary tract |
| anuria | absence of urine formation |
| diuresis | increased output of urine |
| dysuria | painful or difficult urination |
| nocturnal enuresis | urinary incontinence during sleep |
| nocturia | excessive urination at night |
| oliguria | Decreased urine output |
| polyuria | excessive urination |
| urinary hesitancy | difficulty in starting a urinary stream |
| urinary retention | inability to completely empty the bladder |
| urinary incontinence | inability to control urination |
| overflow incontinence | small amounts of urine leak from a full bladder |
| stress incontinence | the inability to control the voiding of urine under physical stress such as running, sneezing, laughing, or coughing |
| overactive bladder | occurs when the muscles of the bladder contract involuntarily even though the bladder is not actually full enough to indicate the need to urinate |