Anatomy · MU Sofia

Cardiovascular system · 122. Common iliac artery. Internal iliac artery.

Covers the common iliac arteries, which arise from the aortic bifurcation at L4 and split into external and internal branches, with the right one noted as slightly longer. It then goes through the internal iliac artery, listing its anterior trunk (obturator, rectal, umbilical, vesical, pudendal, gluteal and uterine branches) and posterior trunk (iliolumbar, lateral sacral and superior gluteal arteries), with notes on supply territories and anastomoses. Two diagrams accompany the text.

Inside: 2 sections · 2 labelled pictures · 14 flashcards · 2 min

Topic 110 of 264 in the MU Sofia syllabus for Anatomy (Dental Medicine, Year 2). The free AceMed note covers it in 2 sections, about 219 words (2 min of reading), with 14 flashcards.

In this note

  1. COMMON ILIAC ARTERY
  2. INTERNAL ILIAC ARTERY

COMMON ILIAC ARTERY

  • Arise from the abdominal aorta bifurcation at the L4 level.
  • They are left & Right common iliac artery. each divide into their terminal branches:

Abdominal aorta

  • L4
  • Right common iliac artery. → 1 cm longer than the left.
  • medial aspect of psoas major muscle → between L5-S1
  • External
  • Internal.
  • Left common iliac artery
  • External
  • Internal.

INTERNAL ILIAC ARTERY

IIA Branches

at superior margin of the greater sciatic foramen. → runs inferoposterioly

  • 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 art.
  • Vas deferens
  • Inferior vesical a. (Vaginal a. in females)
  • Internal Pudendal a.
  • Inferior gluteal a.
  • Uterine a. (female only)
  • Posterior trunk (twords 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 throug the greater sciatic foramen above the piriformis muscle
  • In the gluteal region
  • Superficial branch S: glutes maximus muscle
  • Deep branch S: gluteus medius and minimus

make anastmose with the lateral and medial femoral circumflex arteries (from deep femoral a.) + with the inferior gluteal artery.

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