URINARY BLADDER :-
introduction :-
-it is a muscular reservoir of urine present in the true pelvic behind pubic symphysis.
-it lies between pubic symphysis and rectum in male and between pubic symphysis and uterus in female .
-full bladder comes in abdomen above the pubic symphysis .
location and shape :-
-the urinary bladder is situated in the anterior part of the behind the pelvic immediately behind the pubic symphysis and in front of rectum in male uterus in the female .
shape:-
-it is pear shaped structure having thick muscular wall linked by transitional epithelium that allow expansion.
capacity :-
-normally in adult male the capacity various from 120 to 320 ml .
- the mean capacity is about 220 ml .
relations bladder :-
1) superior surface :-
- peritoneal cavity
-coils of ileum
-sig moid colon
-uterine cervix in female
2) Anterior surface :-
-retropubic space
-puboprostatic ligaments
ligament :-
1) lateral ligaments two in number right and left .
2) puboprostatic ligament fair in number two on each side lateral &medial .
3)median umbilical ligament.
4) posterior ligament two in number 4 left .
5) anterior there are three fold ( female )
6) laterally a pair of false lateral ligament
7) posterior a pair of false posterior ligament .
Apex :-
- median umbilical ligament
neck :-
- prostate gland ( in male ) urogential diaphragm ( female )
Base :-
- it form posterior surfaces pouch in the ( male )
- vaslco uterine pouch in the ( female )
blood supply of urinary bladder :-
Aetrial supply :--
-main arterial supply :-- superior and inferior vesical arteries arise from the anterior trunk of internal illac arteries >
Additional arterial supply :- obturator and inferior gluteal arteries .in the female uterine and vaginal arteries .
-the inferior vesical artery in female is called vaginal artery .
venous drainage :-
- drained by vesical venous plexus lying on the inferolateral surfac .vein from this plexus drains into internal illiac vein.
Nerve supply :-
- sympathetic fibers derived from T10 L 1 segment and parasympathetic fibers from vagus nerve .
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