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Stack #23329
urinarybodystructure and function
| Question | Answer |
|---|---|
| kidneys | form urine from the blood |
| ureters | tubes that conduct urine from the kidneys to the urinary bladder |
| urinary bladder | temporary reservoir for urine |
| urethra | conducts urine from the bladder to the outside for elimination |
| What cavity are the kidneys located? | abdominal cavity |
| What type of tissue cushions the kidneys? | adipose tissue |
| Name the 3 distinct regions of the kidney | renal cortex, the reanl medulla, renal pelvis |
| The renal pyramids are formed by what region of the kidney? | renal medulla |
| What is the function of the calyces? | collection of urine formed in the kidney |
| nephron | the functional unit or urine making unit of the kidney |
| What are the two parts of a nephron? | renal tubule and vascular component |
| What structure is C-shaped and partially surrounds the glomerulus | Bowman's capsule |
| What is missing from the urine formation sequence? Bowman's capsule-- proximal convoluted tubule-- Loop of Henle--collecting duct--renal medulla--calyx-- renal pelvis | Distal convoluted tubule |
| glomerular filtration | causes water and dissolved substances to move from the glomerulus into Bowman's capsule |
| What provides the driving force for filtration in the kidney? | blood pressure in the glomerulus is higher than the pressure within Bowman's capsule |
| glomerular filtrate | the water and the dissolved ssubstances filtered into Bowman's capsule |
| What does GFR? | glomerular filtration rate |
| tubular reabsorption | the process by which water and dissolved substances move from the tubules into the blood of the peritubular capillaries |
| Reabsortion occurs mostly in what structure? | proximal convoluted tubule |
| Drugs that increase the production of urine | diuretics |
| tubular secretion | moves very small amounts of substances from the blood into the tubules |
| What 3 processes are required to form urine? | filtration, reabsorption, and secretion |
| What hormone is secreted by the adrenal cortex and acts primarily on the distal tubule of the kidney? | aldosterone |
| An enzyme that stimulates the release off aldosterone | renin |
| What event is missing from the releasing of aldosterone? renin activates angiotensinogen--angiotensin I--converting enzyme--adrenal cortex-aldosterone | angiotensin II |
| antidiuretic hormone | allows the kidneys to concentrate urine |
| What gland secretes ADH? | posterior pituitary gland |
| What gland secretes PTH? | parathyroid glands |
| What hormone stimulates the renal tubules to reabsorb Calcium and excrete phosphate | PTH |
| specific gravity of urine | 1.001-1.035 |
| What happens to the specific gravity of urine during dehydration? | it increases |
| The pH of urine | average 6.0 |
| The involuntary muscle of the urinary bladder | detrusor muscle |
| What gives rise to a sense of urinary urgency? | micturition reflex |
Created by:
katyrn
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