Anatmoy Pelvis Flashcards
(29 cards)
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
External genital muscles
Formed by m. Bullbocavernosis provides clitoris erection in when and m. ischiocavernoses is responsible for maintaining this erection
Transverse perineal muscle support pelvic visceral and regulate intra-abdominal pressure
Urogenital diaphragm
It’s also called perineal membrane, it’s triangle shape and fibromusclar layer and it’s located anterior pelvis outlet and attached to pubic bone and lateral wall of vagine
Pelvic diaphragm
Iliococcygeus
Pubococcygeus
Puborectalis
Ischiococcygeus
All this muscle together is called levator ani
While this muscle are supported the pelvic viscera the provided urinary and fecal continence by forming a band around the urethra and anorectal junction
Endopelvic fascia
Is complex connective tissue of the pelvic floor and consist of collagen, smooth muscle, elastic, fibrovascular content
The connective tissue the pelvic organs and pelvic lateral wall
It’s plays most important role for providing support for the bladder, urethra, vagina and other pelvic organs
Pelvic floor ( active support structure and passive support structure)
Active support structure: muscles actively support the pelvic floor
Passive support structure: tendons and ligaments provide passive support
Explain the pelvic floor type 1 and type 2
Type1 is 66%soft twitch , maintaining the tone of levator ani and supporting the pelvic organs
Type 2 is 34% fast twitch, activated in stressful situations or sudden intr-abdominal pressure
Supporting the pelvic organ depend on what
pelvic floor skeletal muscle
Strong connectives tissue
Attachment of these structures to the pelvic bone
What are Micturition two phases
Bladder filling
Bladder emptying
Urinary system gets its innervation from three sources what are they
Somatic nervous system
Parasympathetic nervous systems
Sympathetic nervous system