pelvis blood supply Flashcards
what vertebral level does the abdominal aorta divide into the common iliac arteries
L4
where do the external and internal iliac arteries arise
common iliac divides into the external and internal iliac arteries
what muscle do the internal iliac arteries descend on
psoas major
move posteriorly down medial side of muscle
pass posteriorly to greater sciatic foramen
what is the anatomical course of the external iliac artery
descends on psoas major but moves anteriorly
exists pelvis deep to inguinal ligament and becomes femoral artery
when does the internal iliac artery divide into anterior and posterior trunks
superior boarder of greater sciatic foramen
what arteries arise from the anterior division of the internal iliac artery
umbilical obturator inferior and superior vesical middle rectal internal pudendal inferior gluteal uterine
what vessel does the umbilical artery give rise to
superior vesicle
what vessel does the uterine artery give rise to
vaginal
describe the course of the umbilical artery
moves anteriorly and gives off the superior and inferior vesical arteries
describe the anatomical route of the superior vesical artery
branch off umbilical artery
travel anteriorly on the surface of obturator internus
supply superior part of bladder
describe the anatomical route of the inferior vesical artery
only in males (females have uterine artery instead)
arises from anterior division of internal iliac artery
passes underneath the peritoneum and supplies the lower part of the bladder, seminal gland and prostate
describe the anatomical rout of the middle rectal artery
descends in pelvis to rectum
supplies seminal gland, prostate, rectum
where does the internal pudendal artery arise from
anterior division of internal iliac artery
what is the anatomical course of the pudendal artery
runs with pudendal vein and nerve
exists pelvis through greater sciatic foramen anteriorly to sacral plexus
enters perineum through lesser sciatic foramen
what does the internal pudendal artery supply
main artery of perineum muscles of perineum skin urogenital triangles erectile tissues
where does the inferior gluteal artery arise from
anterior division of internal iliac artery
anatomical course of inferior gluteal artery
leaves pelvis by greater sciatic foramen
inferior to piriformis muscle
origin of uterine artery
anterior branch
only in females
anatomical course of uterine artery
runs medially on levator ani
passes OVER ureter
gives off ascending and descending branch at junction of vagina and cervix
where does the ascending branch of the uterine artery go
anastomoses with ovarian artery
where does the descending branch of the uterine artery go
becomes vaginal artery and supplies vagina
what vessels does the posterior division of the internal iliac artery give rise to
iliolumbar artery
lateral sacral artery
superior gluteal artery
describe the anatomical course of the iliolumbar artery
ascends posterior to psoas major
describe course of lateral sacral artery
runs superficially to piriformis
gives off branches that pass through sacral foramina
anatomical course of superior gluteal artery
travels through greater sciatic foramen above the piriformis muscle to supply gluteal muscles
origin of superior rectal artery
abdominal aorta at L3
terminal branch of inferior mesenteric artery
anatomical route of superior rectal artery
descends into pelvis
bifurcates at S3
supplies upper rectum
origin of testicular arteries/ovarian arteries
arise from aorta at L3 superior to superior rectal artery
anatomical course of ovarian arteries
descends retroperitoneally
crosses brim of pelvis and is transmitted to ovaries by the suspensory ligament
anatomical course of testicular arteries
descend retroperitoneally
travel through inguinal canal and are transmitted by spermatic cord
anatomical course of obturator artery
arises from anterior branch
travels antero-inferiorly on pelvic wall
supplies pelvic muscles and head of femur
describe venous drainage of pelvis
veins are paired with arteries
describe the drainage of testicular/ovarian veins
left testicular/ovarian vein drains into left renal vein
right veins drain directly to IVC
where does the superior rectal vein drain to
portal venous system
