Walks through the branches of the internal iliac artery, which runs inferoposteriorly from the superior margin of the greater sciatic foramen. It separates the anterior trunk, covering the obturator, rectal, umbilical, vesical, pudendal, gluteal and uterine branches, from the posterior trunk, covering the iliolumbar, lateral sacral and superior gluteal arteries. Each branch is listed with the structures it supplies and its anastomoses, and two pictures accompany the text.
Topic 106 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 2 sections, about 162 words (1 min of reading), with 14 flashcards.
In this note
INTERNAL ILIAC ARTERY
IIA Branches
IIA Branches
at Superior margin of the greater sciatic foramen → runs inferoposteriorly
Anterior trunk (towards the ischial spine) OMUU III
Obturator a. Runs through the obturator canal
Anterior
Posterior
Pubic branch
Acetabular branch
Middle rectal a. S: Rectum
Umbilical a.
Superior vesical a.
Vas deferens
Inferior vesical a. (Vaginal a. in females)
Internal Pudendal a.
Inferior gluteal a.
Uterine a. (female only)
Posterior trunk (towards the greater sciatic foramen) ILS
Iliolumbar a.
iliac branch S: iliacus muscle Make anastmoses with iliac branches of obturator artery.
Lumbar branch S: Psoas major + quadratus lumborum Make " " the 4th lumbar artery
lateral sacral a.
Superior
Inferior
superior gluteal a. leaves the pelvic cavity with the sup gluteal nerve through the greater sciatic foramen above the piriformis muscle
In the gluteal region
Superficial branch S: glutes maximus muscle
make anastmose with the lateral and medial femoral circumflex arteries (from deep femoral a.) + with the inferior gluteal artery
Deep branch S: gluteus medius and minimus
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