Urinary bladder

Question 1

site of urinary bladder

Answer 1

• Empty: Lesser pelvis
• distended: pelvi-abdominal

Question 2

Shape of Urinary bladder

Answer 2

• Apex
• base
• Superior surface
• 2 infero-lateral surfaces
• Neck

Question 3

relations of Apex of urinary bladder

Answer 3

• Symphysis pubis (it lies behind it)
• apex is continuous woth Median umbilical ligament

Question 4

relations of Base of urinary bladder

Answer 4

male 🚹:
* seperated from rectum by recotvesical pouch containing coils of colon & Ilium
* 2 Ampulla of vas deferens
* 2 seminal vesicles
* Denonviller fascia

Female 🚺:
* Anterior vaginal wall
* supravaginal cervix

Question 5

Relations of superior surface of urinary bladder

Answer 5

• Peritoneum
• ureters join posterior angel of superior surface

Male 🚹:
* Sigmoid colon
* coils of ileum

Female 🚺:
* utero-vescical pouch
* uterus
* supravaginal cervix (with fibroareolar tissue in between)

Question 6

relations of the 2 infero-lateral surfaces of urinary bladder

Answer 6

In front: retro-pubic fat

posteriorly:
* Obturator internus (above)
* Levator ani (below)

Question 7

Neck of urinary bladder gives attachement to

Answer 7

🚹: Pubo-prostatic ligament
🚺: pubo-urethral ligament

both are also known as pubo-vesical ligaments

Question 8

relations of neck of urinary bladder

Answer 8

🚹:
* lies directly on protstate
* continuous with prostatic urethra
* gives attachement to pubo-prostatic ligament

🚺:
* Lies directly on pelvic fascia
* Continuous with urethra
* Gives attachement to pubo- urethral ligament

Question 9

Peritoneal covering Of urinary bladder

Answer 9

🚹: superior surface & uppermost part of base (periotoneum then passes laterally to form right and left paravesical fossae)

🚺: superior surface only, (periotoneum then passes laterally to form right and left paravesical fossae)

Question 10

Enumerate ligaments of Urinary bladder

Answer 10

• Median umbilical Ligament
• Medial umbilical ligaments
• Pubovesical (puboprostatic or pubourethral) Ligament
• Lateral ligaments
• Posterior ligaments/ sacrogenital folds

Question 11

Attachement of median umbilical ligament

Answer 11

from apex of urinary bladder to umbilicus

fibrosed urachus

Question 12

Attachement of medial umbilical ligaments

Answer 12

from superior surface of bladder towards umbilicus

2 obliterated umbilical Arteries

Question 13

Attachements of pubovesical ligaments

Answer 13

from pubic bone to neck of urinary bladder

Question 14

Attachements of lateral ligaments of urinary bladder

Answer 14

they are lateral peritoneal reflections extending towards lateral wall of pelvis

Question 15

all mucosa of urinary bladder is endodermal in origin except ___

Answer 15

Mucosa of trigone, it’s mesodermal in origin

Question 16

Interior structures of Bladder is made up of:

Answer 16

Mucous memebrane:
* wrinkled when empty forming folds (rugae), not sensitive to pain

Trigone:
* bounded by internal urtheral orifice below and 2 ureteric orificies superolateraly
* Sensitive to pain
* pink (pale vascular)
* mucosa is mesodermal in origin

2 Ureteric orifices:
* At the 2 superolateral angles of the trigone
* slit like
* muscular ridge extending between the 2 orifices know interureteric crest, forming upper boundary of trigone

Internal urethral orifice:
* lies in apex of trigone
* small elevation behind it in adult males caused by median lobe of prostate (uvula of prostate)

Question 17

Describe Arterial supply of urinary bladder

Answer 17

Superior surface = Superior vesical A:
* from proximal patent part of umbilical A of Internal ilac A

Infero-lateral surface = Inferior vesical A 🚹/ Vaginal A & uterine A 🚺:

+ Branches from obturator A

Question 18

Venous drainage of urinary bladder

Answer 18

Vesical Venous plexus (in fascia surrounding bladder) —> Internal iliac vein

Question 19

Lymph drainage of Urinary bladder

Answer 19

• Upper part –> external iliac LNs
• Lower part –> Internal Iliac LNs
• some from neck –> sacral LNs

Question 20

Parasympathetic Nerve supply of bladder & its action

Answer 20

S2,3,4 along pelvic splanchnic N

Action: contract wall of bladder, relax sphincter

Question 21

sympathetic Nerve supply of bladder & its action

Answer 21

T10-L2

Action: relaxes wall of bladder, contract sphincter