Anatmoy Pelvis Flashcards
Bladder
Is reservoir where urine is stored and the capacity for adult female is 400-500 ml , it’s located in pelvic cavity behind pubic bones
What is the three layer of the bladder
Mucosa
Smooth muscle layer ( detrusor)
Adventiria
Detruson muscle consists of what
Inside it consists of circular and spiral and outside it consists of longitudinal smooth muscle fibers also on the deepest
What are the two parts of the bladder
1) Trunk
2) Trigon: is where the urethral orifices open at the bladder base
Where does the bladder connected to urethra
By the bladder neck
What does bladder nack contains
Detrusor muscle fibers,
Elastic
Collagen fibers
Urethral smooth muscle fibers
What happens to the bladder neck when those muscles are relaxed or contract
When they are relaxed the bladder outlet is passively pulled , closed and because impermeable
When they’re contracts the bladder neck open
Urethras
Is fibromuscular tube with an average length of 3-4cm and 8-9m. Diameter
It’s embedded in the anterior wall of the vagina and behind the symphysis pubis
Urethra consists of
1) Smooth muscle fibers ( inner longitudinal and outer circular arrangement) which are continuous of involuntary contractions trigger structures
2 partially striated muscles fibers
Urethra sphincter are examined in two parts
External and internal
External urethral sphincter
Located at membranous urethra and it’s under control of somatic pudendal nerve
It’s real sphincter and consists of skeletal muscles
It’s mainly contains fast twitch muscles fibers
Internal urethral sphincter
There is not real sphincter in the bladder neck near the internal
Its mostly slow twitch muscles fibers
It’s under control of ans
Pelvic floor
Is rhomid structure with symphysis pubic anterior sacrum posterior and ischial spine lateral
The imaginary line passing through the ischial and pelvic floor is divided into what
Posterior area called anorectal triangle and anterior area called urogential triangle
What are the layers of pelvic floor
External gentail muscles
Urogenital diaphragm
Pelvic diaphragm
Endopelvic fascia