Changes

These are paired arteries, a right and a left branch, which is one of the terminal branches of the aorta. It provides a blood supply to the pelvic viscera, the walls of the pelvic cavity and the lumbar and gluteal muscle masses.

These are paired arteries, a right and a left branch, which is one of the terminal branches of the aorta. It provides a blood supply to the pelvic viscera, the walls of the pelvic cavity and the lumbar and gluteal muscle masses.

The initial branches in order of when the branch off are as follows (the highlighted vessels are ones that have direct relevance to the hindlimb);

The initial branches in order of when they branch off are as follows (the highlighted vessels are ones that have direct relevance to the hindlimb);

* '''Median Sacral Artery''' - can arise from either left or right internal iliac and supplies the sacrum and tail.

* '''Median Sacral Artery''' - can arise from either left or right internal iliac and supplies the sacrum and tail.

** Lateral Caudal Artery - provides blood to the tail

** Lateral Caudal Artery - provides blood to the tail

* Dorsal Perineal Artery - supplies the perineum.

* Dorsal Perineal Artery - supplies the perineum.

=='''External Iliac Artery'''==

=='''External Iliac Artery'''==