Which artery do the common iliac arteries bifurcate into?

The common iliac arteries bifurcate into the internal and external iliac arteries. This anatomical division occurs at the level of the pelvic brim, where each common iliac artery splits to supply different regions. The internal iliac artery is responsible for supplying blood to the pelvic organs, gluteal region, and part of the medial thigh, while the external iliac artery continues into the thigh as the femoral artery, which supplies the lower extremities. Understanding this bifurcation is crucial, as it is fundamental to vascular anatomy and is essential for various vascular procedures and interventions. The other options do not represent the correct continuation of the common iliac arteries and reflect different vascular pathways that do not originate from them.