Trunk vessels (aorta, vena cava, abdominal branches)
Trunks of internal iliac artery (anterior and posterior)
Trunci anterior et posterior arteriae iliacae internae
- Origin
- Terminal divisions of the internal iliac artery at the pelvic brim
- Insertion
- Anterior trunk yields visceral branches (umbilical, obturator, inferior vesical, uterine, middle rectal, internal pudendal, inferior gluteal); posterior trunk yields parietal branches (iliolumbar, lateral sacral, superior gluteal)
- Function
- Distributes arterial blood to all pelvic organs, perineum, and gluteal region
- Innervation
- Inferior hypogastric plexus
- Movement & chain
- Arterial pulsatile flow
- Palpation
- Not palpated directly
- Clinical
- Superior gluteal artery injury in posterior pelvic ring disruptions causing catastrophic retroperitoneal hematoma; prostate artery embolization (PAE) for BPH.
- Segmental innervation
- S2-S4 and L5-S1 spinal levels
- In clinical practice
- Interventional radiology nursing support during selective pelvic embolization procedures
- Region in the model
- Trunk vessels (aorta, vena cava, abdominal branches)