Pelvis and perineum 5.1-5.3 Flashcards
Explain the course of the peritoneum in males. (9)
-Descends at the ant abd wall.
-Reflects over the sup surface of bladder (supravesical fossa)
-Covers the sup surface of bladder and slopes down to asc at the pelvic wall (paravesical fossa).
-Descends at post surface of bladder.
-Lat form ureteric folds over the ureters, duc def and sup ends of seminal glands.
-Reflects from bladder onto rectum forming a rectovesicle pouch.
-The rectovesicle pouch extends lat and post to form a pararectal fossa.
-Ascends rectum (inf to sup)
-Engulfs the sigmoid colon at rectosigmoidal junction.
In which part of the male peritoneum does fluid accumulates when there is an infection?
The rectovesicle pouch
Explain the course of the female peritoneum.
-Descends ant abd wall
-Reflects over the sup surface of bladder (supravesical fossa).
-Covers the sup surface of bladder and slopes down sides to ascend at the lat wall of pelvis (paravesical fossa)
-Reflects from bladder to uterine body (vesico-uterine pouch)
-Covers the uterine body, fundus and post fernix (broad lig which suspends the uterine tubes, ovaries and round lig of uterus)
-Extends lat from uterus.
-Reflects from vagina onto rectum (recto-uterine pouch)
-The recto-uterine pouch extends lat and post to form the pararectal fossa.
-Asc rectum (inf to sup)
-engulfs the sigmoid colon at rectosigmoidal junction.
Where does fluid accumulate in the female peritoneum during an infection?
Recto-uterine pouch
What is the male equivalence of the recto-uterine pouch?
Recto-vesicle pouch
Another name for the recto-uterine/vesicle pouch?
Pouch of douglas
What is the retropubic space?
-A space between the pubic symphysis and the urinary bladder.
What makes up the ff for the retropubic space:
a. Medial border
b. Lateral
c. Ant
d. Post
e. Roof
f. Floor
a. Inferolateral surface of bladder.
b. Pubic bone ad obturator internus fascia.
c. Pubic symphysis and post surface of pubic bone.
d. Cord of connective tissue and internal iliac veins.
e. Covering peritoneum
f. Pelvic fascia, puboprostatic lig/ pubovesical lig, pelvic diaphragm.
What is the course of the ureters? (3)
-Runs over the external iliac vessels.
-Btwn the pelvic peritoneum and internal iliac artery.
-Enters at the base of bladder.
Blood supply and venous drainage of the ureters?
Upper portion: Renal artery and vein.
Lower portion: Vesical artery and vein.
Lymphatic drainage of the ureters?
From sup to inf:
-Common, internal and external iliac nodes.
Innervation of the ureters?
Adjacent plexuses, aortic, renal, sup and inf hypogastric.
Briefly explain the structure of the bladder.
-Has a superior and inferolateral surfaces which meet at the apex, which has the median umbilical lig attached to it.
-It has a base which consist of the openings for the ureters.
-The two openings as well as the internal urethral orifice form a trigone, which has transitional epithelium (urothelium).
-Most inf structure is the neck of the bladder which is continous with the urethra.
Which structures help to keep the urine in the bladder?
Mucosal folds
Muscular thickening btwn ureteric orifices?
Inter-ureteric torus
Evagination post to internal urethral orifice, for the prostate gland?
Uvula
Supporting ligaments of the bladder (2)
M- Puboprostatic lig
F- Pubovesical lig
What are the relations of the bladder in a female:
-Sup
-Post
-Lat
-Ant
-Neck
-Apex
Sup- Peritoneum, vesico-uterine pouch, paravesical fossa.
Post- Vagina, supravaginal part of cervix.
Lat- Ureters
Ant- Retropubic space
Neck- Pelvic and urogenital diaphragm
Apex- Connected to umbilicus via urachus
What are the relations of the male bladder:
-Sup
-Neck
-Post
-Ant
-Apex
Sup-Covering peritoneum
Neck- Pelvic diaphragm
Post-Seminal vesicles, duc def, rectum and rectovesicle pouch.
Ant- Retropubic space and contents.
Apex- connected to umbilicus via urachus
Blood supply of the bladder
Sup and inf vesical aa. which are branches of the internal iliac artery.
Venous drainage of the bladder
Vesical venous plexus.
Name the four parts of the male urethra.
-Preprostatic
-Prostatic
-Membraneous
-Spongy part
Which part is the most elastic and which one is least elastic?
Most-Prostatic part
Least-Membraneous
Into which part do the prostate gland and ejaculatory duct pour their contents?
The prostatic part
Which part is the longest?
Spongy part
Which structure do we have towards the end of the spongy part?
Navicular fossa