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Lecture 35
Urinary II
15
Anatomy
Undergraduate 2
12/07/2010

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Term
ureters location
Definition
-renal pelvis to bladder
-retroperitoneal
Term
ureters structure
Definition
-muscosa
-transitional epithelium
-muscularis layer (smooth muscle, fibrous CT)
Term
urinary bladder location
Definition
-posterior to pubic bone
-anterior to rectum
-inferior to peritoneum
Term
urinary bladder extent
Definition
empty-within pelvic cavity
full-extends into abdomen (may reach umbilicus)
Term
bladder layers
Definition
-mucosa (inner, rugae, transitional epithelium)
-submucosa (supports mucosa, nerves/blood vessels)
-muscularis (smooth/detrusor muscle)
-serosa (CT)
Term
bladder function
Definition
store/expel urine
Term
urethra location
Definition
neck of bladder to orifice
Term
female urethra structure
Definition
-urinary only
-3 cm
-urethral orifice between labii minor
-anterior to vaginal orifice
Term
male urethra structure
Definition
-urinary and reproductive
-20cm
-urethral orifice at end of penis
Term
urethra regions
Definition
-prostatic
-membranous
-penile
Term
prostatic urethra
Definition
-passes through prostate
-receives secretions from prostate and ejaculatory duct
Term
membranous urethra
Definition
pass through urogenital diaphragm
Term
penile urethra
Definition
-within penis
Term
micturation
Definition
urination
Term
steps to micturation
Definition
-bladder fills
-stretch receptors send message to sacral region
-parasympathetic nerve impulses travel to detrusor (contracts) and internal urethral sphincter (relaxes)
-brain perceives urgency to urinate
-brain relays efferent impulse to external urethral sphincter
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