The internal iliac artery (dave's notes) Flashcards
Describe the two main divisions of the internal iliac artery
Small posterior and large anterior branches
Where does the common iliac artery bifurcate?
At the sacroiliac joint, with the internal iliac artery passing downwards
Name the branches of the posterior division of the IIA
3 branches, all parietal; Iliolumbar, lateral sacral artery, superior gluteal
Describe the groups of the anterior division of the internal iliac artery
3 associated with the bladder, 3 to other viscera, 3 parietal branches
Name the three branches of the anterior division of IIA to the bladder
Superior vesical, inferior vesical, obliterated umbilical
Name the three branches of the anterior division of the IIA to non-bladder viscera
Middle rectal, uterine artery, vaginal artery
Name the three parietal branches of the anterior division of the IIA
Obturator artery, internal pudendal artery, interior gluteal artery
Describe the course of the iliolumbar artery
The iliolumbar artery passes upwards out of the pelvis in front of the lumbosacral trunk deep to psoas
What does the iliolumbar artery supply?
The lumbar branch (=L5 branch) supplies psoas and QL, and gives a small spinal L5 branch. The iliac branch supplies the iliac fossa and anastomoses around the ASIS
What is the course of the lateral sacral artery? What does this supply?
The lateral sacral artery runs down lateral to the anterior sacral foramina supplying roots and piriformis
What is the largest branch of the IIA?
The superior gluteal
What is the course of the superior gluteal artery?
The superior gluteal exits through the greater sciatic foramen into the buttock
What is the highest branch if the IIA?
The superior vesical artery
What does the superior vesical artery arise from?
The persistent patent proximal part of the foetal umbilical artery. The distal part becomes the medial umbilical ligament.
What is the course of the superior vesical artery?
The superior vesical artery runs along the side wall of th pelvis and then turns medial to reach the upper part of the bladder.
What does the superior vesical artery supply?
The bladder, adjacent ureter and ductus deferens.
What is the course of the inferior vesical artery, and what does it supply?
The interior vesical artery runs lower than the superior vesical, and supplies the trigone and lower bladder, ureter, ductus deferens, and SV ?? (plus prostatic artery ??)
What does the obliterated umbilical artery supply?
Nothing you idiot. It is obliterated.
What is the course of the middle rectal artery? What may it give off?
The middle rectal artery runs toward the lower rectal wall, dividing before entering the rectal wall. It may give off a prostatic artery.
What is the course of the uterine artery?
The uterine artery crosses the pelvis at the base of the broad ligament, turning up at the cervix. It anastomoses with the ovarian artery.
What is the vaginal artery a branch of?
The uterine artery.
What is the course of the obturator artery?
The obturator artery passes along the side wall of the pelvis below the nerve to enter the obturator foramen. It gives a branch to PS??? periosteum (anastomosing with the IEA).
What artery may be at risk when releasing a strangulated (what type of hernia????)
The obturator artery. ??obturator hernia presumeably??
What is the course of the internal pudendal artery?
The internal pudendal artery lies in front of the inferior gluteal, piercing the parietal pelvic fascia. It exits through the greater sciatic foramen? to the perineum, anus and external genitalia.
What is the course of the interior gluteal artery?
The inferior gluteal artery runs backwards through the greater sciatic foramen into the buttock.
