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8 Cards in this Set
- Front
- Back
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Micturition |
Urinating or voiding. Internal urethra sphincter (involuntary control). External urethral sphincter (voluntary control) |
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Emptying reflex |
Initiated by stretch reflex in bladder wall. Bladder wall contracts. Internal sphincter relaxes. External sphincter relaxes and urination occurs fil |
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Filtration |
Goes on continuously in renal corpuscles. Glomerular blood pressure causes water and dissolved substances to filter out of glomeruli into bowman corpuscle. 125ml per minute |
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Reabsorption |
Movement of substances out of renal tubules and back into the blood in peritubular capillaries. Opposite of filtration. Reabsorbed into proximal tubule. Sodium in henle loop. |
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Secretion |
Movement of substances into the urine. Happens in distal and collecting ducts. Moves from blood to urine. |
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ADH (antidiuretic hormone) in urine control |
Secreted by posterior pituitary; promotes water reabsorption by collecting ducts, reduces urine volume, a salt and water retaining hormone |
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Aldosterone |
Secretes my adrenal gland, triggered by RAAS process, promotes sodium and water reabsorption in nephron, reduces urine volume |
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ANH |
One of the peptide hormones secretes by atrial cells in heart; promotes loss of sodium and water into kidney tubules, increases urine volume |
