Anatomy 6 - Lateral Pelvic Wall and Pelvic Mass Flashcards
Where do most of the arteries that supply the pelvis and perineum arise from?
Internal ilac
What arteries that supply the pelvis and perineum do not arise from the internal iliac artery?
Gondal artery
Superior rectal artery
Where does the gonadal artery arise from?
L2 aorta
Where does the superior rectal artery arise from?
Inferior mesenteric
At what vertebral level does inferior mesenteric artery arise?
L3
At what vertebral level does common iliac artery arise?
L4
What does the anterior division of the internal iliac artery supply?
Viscera of pelvis
What does the posterior division of the internal iliac artery supply?
Parietum/ walls of pelvis
What is a remnant of the umbilical artery?
Median umbilical ligament
What structures does the umbilical artery connect in foetus?
Internal iliac to placenta
What artery is only present in males?
Inferior vesical artery
What is the equivalent of the inferior vesical artery in females?
Vaginal artery
What artery and its branches supplies most of the perineum?
Internal pudendal
What are the branches of the posterior division of the internal iliac artery?
Posterior:
Iliolumbar
Lateral sacral
Superior gluteal artery
At what vertebral level is the terminal branch of the superior gluteal artery?
Anterior rami S1
What is the female equivalent of the artery to the vas deferens?
Uterine artery
What are the abdominal wall ligaments/ folds?3
Lateral umbilical fold
Medial umbilical fold
Median umbilical fold (urachus)
What type of hernia occurs lateral to the umbilical fold? And what type occurs medial?
Lateral - indirect hernia
Medial - direct hernia
What forms the abdominal wall ligaments?
Folds of peritoneum
What is the female equivalent of the scrotal artery?
Labial artery
From which artery do most branches in the perineum originate?
Internal pudendal
Where does the anterior scrotal/ anterior labial artery originate?
External iliac
Where does the internal pudendal artery arise from?
Anterior division of internal iliac artery
What are the terminal branches of the internal pudendal artery?
Dorsal artery of penis/ clitoris
Deep artery of penis/ clitoris
What are the 2 branches of ovarian artery?
Ovarian branch
Tubal branch
Where are there anastomosis between uterine, vaginal and ovarian arteries?
Uterine and ovarian
Uterine and vaginal
What about the structure of the ascending branch uterine arteries allows for it to be stretched and prevents tearing during pregnancy?
Tortuous
What does the venous drainage of lateral pelvic wall follow?
Arterial system
Where does the majority of blood from the lateral pelvic wall drain to?
Internal iliac vein
Apart form the internal iliac vein, where else may blood from the lateral pelvic wall drain to?
Via superior rectal to hepatic portal system
Via lateral sacral veins into internal vertebral venous plexus
Why is there a risk of cancer spreading from lateral wall to spine and brain?
Some blood drains to venous plexus
Why might a mass compressing in pelvis have symptoms in the leg?
Presence of sciatic nerve
Where does lymph from superior pelvic viscera drain?
External iliac nodes to
Common illiac, aortic, thoracic duct then venous system
Where does lymph from inferior pelvic viscera drain?
Deep perineum to
Common illiac, aortic, thoracic duct then venous system
Where does lymph from superficial perineum drain to?
Superficial inguinal nodes
Where does lymph from gonads drain?
Lumbar (caval)/ aortic nodes
What is meant by tran-peritoneal spread of cancer?
Through peritoneal layer into peritoneal cavity
