Saturday, January 21, 2012

Lateral Sacral Artery

The lateral sacral arteries are oxygen-rich blood vessels that originate from the second branch of the posterior division of internal iliac artery, giving off branches which run into the anterior sacral foramina to supply related bone and soft tissues, structures in the vertebral canal, and skin and muscle posterior to the sacrum.

As a matter of fact, the lateral sacral arteries (or artery) show great irregularity in development. According to a study, from 100 subjects: 48 had two lateral sacral arteries, 30 had a single lateral sacral artery, and 22 had three lateral sacral arteries. In some cases, one lateral sacral artery came off directly from the internal iliac artery.