A&P2 Test 5 #3 of Urinary System-Bladder
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| Urinary bladder-movable structure: | held in place by folds of the peritoneum
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| Bladder shape depends on: | amt of urine at that moment
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| How bladder looks full? Empty? | Full-sperical; Empty-deflated balloon
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| TRIGONE is a | sm triangular area at base of bladder
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| The trigone is formed by the: | openings of urethral & ureters
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| RUGAE are caused: | bladder is empty and walls fold
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| Bladder position changes due to | filling; rises in abdominal cavity as fills
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| Four coats of bladder wall are: | mucosa, submucosa, muscularis, serous
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| MUCOSA is what layer? Has? | innermost layer; has transitional epithelium
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| Transitional epithelium is stretchable: | so this layer can regulate the inflation & deflation
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| SUBMUCOSA made of: Connects: | dense CT; connects mucosal to muscularis
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| DETRUSOR COAT is aka | MUSCULARIS LAYER
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| The muscularis-# layers what? | 3 layers of muscle tissue
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| the 3 layers of muscularis tissue: | longitudinal, circluar and longitudinal (sandwich)
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| circular fibers of muscularis form the | INTERNAL SPHINCTER muscle
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| EXTERNAL SPHINCTER is | directly below internal sphincter
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| External sphincter is made of: | skeletal muscle
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| What regulates micturation | stretch receptors & parasympathetic nerves;
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| MICTURITION is | voiding of urine
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| URETHRA is known as the | terminal muscle of urinary system
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| Urethra describe | sm, thin walled, muscular tube
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| Urethra extends from | urinary bladder to body exterior
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| Male Urethra serves a | dual function-urine&seman
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| Female Urethra function: | urinary; completely seperate
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| Female loc of urethra-postier to: | symphysis pubis, embedded in vaginal wall
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| Female length of urethra | 1-2 inches
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| Male length of urethra | 8 inches
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| Internal urethral sphincter-part of: | DETRUSOR MUSCLE (a circular muscle) of bladder
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| Functional unit of kidney is: | NEPHRON
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| Kidneys aka | Renal glands
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| Ad Renal | sits above kidney
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| Renal Vessels are | renal artery and veins
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| pyramids aka | renal pyramids or medullary pyramids
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| Stretch rectp.-sympathetic nerves: | affect the detrusor muscles & the internal sphincter
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| DETRUSOR MUSCLE: | surrounds the bladder neck at urethra junction
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| SEROUS COAT-Layer?Formed by? | outer; peritoneum (covers only superior surface of bladder)
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| # Nephrons in each kidney: | 1/2 to 1 million;
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Created by:
Jean and Study Pals