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Excretory System
Reiser Chapter 5 Excretory System
| Question | Answer |
|---|---|
| The kidneys eliminate _____, _____, _____, and ______. | urine, uric acid, urea, water |
| The large intestine eliminates _____, and _____. | food wastes, feces |
| The liver eliminates ______, and _______. | bile, urea |
| The lungs eliminate _____, _____, and ______. | expiration, carbon dioxide, water |
| The skin eliminates _____, _____, and ______. | heat, perspiration, water |
| The functional unit of the kidneys is the _________. | nephron |
| The tubes that carry urine from the kidneys to the bladder are called _______. | ureters |
| A hormone produced in the kidneys that acts to regulate blood pressure is ________. | renin |
| The kidneys normally filter ______________ of blood plasma a day. | 40 to 50 gallons |
| When a person urinates, _________ muscles in the walls of the bladder contract, forcing the urine out of the body. | involuntary |
| Urine is produced in and eliminated from the organs of the urinary system in the following order: ________, _______, ______, and _______. | kidney, ureter, bladder, urethra |
| The opening between the bladder and the urethra is controlled by a ________. | sphincter muscle |
| The excretory function of the lungs is the elimination of ________. | carbon dioxide |
| Materials for the production of urine come from the ________. | bloodstream |
| The wall of the bladder is composed of ___________. | smooth muscle |
| The excretory function of the colon is the elimination of _____________. | digestive wastes |
| The basic constituents of normal human urine are _____, _______, and organic substances such as ______. | salts, water, urea |
| Nephrons consist of ________ and ________. | glomerulus, tubules |
| The glomerulus, encased in a capsule, contains a network of ________. | capillaries |
| The outer portion of the kidney is the ______. | cortex |
| The _______ surrounds the glomerulus. | Bowman's capsule |
| The urge to void usually begins when the normal bladder contains approximately _______________ of urine. | one-half to two-thirds pint (250-350 cc) |
| The inner portion of the kidneys is the _______. | medulla |
| The blood supply to the kidney is carried by the ___________. | renal artery |
| A cluster of capillary loops is the _________. | glomerulus |
| The functional unit of the kidney is the ________. | nephron |
| The liver produces _______, which is excreted by the kidneys. | urea |
| Fluid is carried from the kidneys to the bladder by the ________. | ureters |
| Of the amount of plasma that is filtered through the kidneys, approximately how much is excreted as urine? | 1% |
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