Urinary Bladder Flashcards
In children the bladder is found in……
Abdomen
The capacity of bladder is…..
300 ml can tolerate till 50l ml
Apex of bladder is directed….lying behind……continuous with…….represents….
Anteriorly
Symphsis pubis
Median umbilical ligament
Oliterated fibrosed urachus
Describe relations of base of bladder
M: covered by recto-vesical pouch, related to rectum separated from it by vas deferens, seminal vesicles & peritoneal pouch
F: ant wall of vagina
Describe relations of suoerior surface of bladder
M: sigmoid colon & loops of ileum
F: ant surface of uterus & loops of ileum in utero-vesical pouch
Describe relations of infero-lateral surfaces of bladder
Both meet at ant border and related to retropubic pad of fat which separates it from body of pubis, obturator internus & levator ani on each side
The ant border is separated from symphsis pubis by retropubic pad of fat
The most fixed part of bladder is……, in male it……
Neck
Rests on base of prostate gland
List the true ligaments of the bladder
- Lateral puboprostatic ligament from ant end of tendinous arch to sheath of prostate & neck of bladder.
- Medial puboprostatic ligament from back of body of pubis to sheath of prostate & neck of bladder.
- Median umbilical ligament
In female they are called pubovesical ligaments
List the false ligaments of bladder
Median umbilical fold
Medial umbilical folds (over obliterated umbilical arteries)
(NB: the lateral umbilical fold is over the inferior epigastric artery)
The angles of the trigone are……., the distance between them is….in empty bladder &…..in full
The 2 ureteric orifices & the internal urethral orifice
2.5 cm
5 cm
Describe arterial blood supply & venous drainage of bladder
M: sup & inf vesical arteries
F: sup vesical & vaginal arteries
Additionally, obturator, inf gluteal, middle rectal
…..
Vesical venous plexus on inferolateral surfaces of the bladder & seminal vesicles in male, continuous with prostatic plexus inf, in female cont with vaginal plexus post. End in internal iliac veins.
Describe lymph drainage of bladder
Mainly external iliac LNs
Few end in internal iliac, obturator & common iliac LNs
Describe nerve supply of bladder
Parasymp: S1-S3
Symp: T11-L2
Extenal sphincter by pudendal n.(S1-S3) , the nerves travel via pelvic splanchnic nerves
Describe bounds of retropubic space
Sup, continuous with extraperitoneal fat in lower part of ant abdominal wall till level of umbilicus
Inf, the floor of the space is formed by medial pubo-prostatic or vesical ligaments
On each side, floor is formed by lateral pubo-prostatice or -vesical ligmanets
In case of ruptured bladder extravasated urine is found…..
Between anterior abdominal wall and the peritoneum
Length of male urethra is…..
Its parts are……
18-20 cm
Preprostatic, Prostatic, membranous, penile (spongy)
Pre-prostatic oart length is……& it is surrounded by…….
1-1.5 cm
Internal urethral sphincter
The most dilatable & widest part of urethra is……., its length is……
Prostatic
3-4 cm
Describe site of urethral crest, on each side there is a shallow depression termed……perforated by…..
Posterior wall of prostatic urethra, in the midline longitudinally
Urethral crest
Orifices of prostatic ducts
In the middle of urethral crest there is……on which orifice of……is present. On both its sides……
Colliculus seminalis
Prostatic utricle
2 ejaculatory ducts open
The prostatic utricle represents……..
The fused lower ends of paramesonephric ducts which form the uterus & vagina in female
The least dilatable narrowest part of urethra is……, its length is……surrounded by…….
Membranous
2 cm
External urethral sphincter
Spongy part of urethra length is……., dilated at beginning forming……., dilated at termination forming……
15 cm
Intrabulbar fossa
Navicular fossa
Describe blood supply of male urethra
Art: inf vesical, middle rectal, penile branches of internal pudendal
Ven: proximal parts drain directly into prostatic venous plexus, the remaining part of male urethra drains in prostatic venous plexus indirectly through deep dorsal vein of penis.
