2-6 Anatomy of the Pelvis: Circulation Flashcards
What is the largest artery of the pelvis?
Internal iliac aa
What is the origin of the internal iliacs? Where is the (cord level)?
Originates from common iliac artery at LV5/SV1 level; anterior to sacroiliac joint.
What is the posterior division of the internal iliac aa?
iliolumbar arteries
lateral sacral artery
superior gluteal artery
What does the iliolumbar artery supply?
Iliacus mm
psoas major
quadratus lumborum
intervertebral space LV5/SV1
What 8 arteries come off of the anterior division of the internal iliac artery?
- Umbilical
- Obturator
- Uterine
- Vaginal
- Inferior vesicle
- Middle rectal
- Internal pedendal
- Inferior gluteal
What does the lateral sacral artery supply?
usually paired; course medially to provide sacral spinal branches to cauda equina
Where does the superior gluteal artery exit the pelvis?
via the greater sciatic foramen
What is the course of the umbilical artery?
courses along lateral pelvic wall and then ascends anterior body wall as the medial umbilical ligament.
What are the branches off of the umbilical artery?
superior vesicle artery
artery to ductus deferens
Where does the obturator artery exit?
courses along lateral pelvic wall to exit obturator canal
The cervix is generally supplied by what arteries?
uterine and vaginal arteries
What does the inferior vesicle artery supply?
in males, provides branches to bladder and reproductive organs; in females, often replaced by vaginal a
What is the course of the internal pudendal artery?
exits pelvis via greater sciatic foramen, then passes around the ischial spine to reenter the perineum via the lesser sciatic foramen.
Where does the inferior gluteal artery exit the pelvis?
exits pelvis via greater sciatic foramen
What do the lumbar aa and deep circumflex iliac aa anastamose with?
- Lower lumbar arteries from abdominal aorta.
- Deep circumflex a is a branch of the external iliac a.
- Anastomosis with iliolumbar a.
What is the course of the ovarian artery? What does it anastamose with and travel through?
Similar to that of the testicular artery
- Arises from abdominal aorta below renal arteries.
- Travels through the suspensory ligament of the ovary.
- Anastomosis with uterine a.
What is the course of the testicular artery? What does it anastamose with and travel through?
- Arises from abdominal aorta below renal arteries.
- Descends along posterior body wall to the deep inguinal ring, courses within spermatic cord.
Anastomosis with artery of ductus deferens.
What artery does the superior rectal artery arise from?
inferior mesentery artery
What anastomoses with the superior rectal artery?
Provides branches to rectum
anastomoses with middle and inferior rectal aa
What anastamoses with the deep femoral artery?
Medial circumflex femoral branches participate in cruciate anastomosis
Anastomosis with inferior gluteal a.
Where does the median sacral artery arise from?
Abdominal aorta prior to bifurcation
What anastamoses with the median sacral artery?
Anastomoses with lateral sacral artery and provides sacral spinal branches
Where do venous plexuses ultimately drain to?
Venous plexuses (rectal, vesicle, prostatic, uterovaginal)
ultimately drain to venae comitantes of arteries and then to internal iliac vein
