Arterial Supply
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The vertebrae are supplied by periosteal branches, equatorial branches, and spinal branches
from larger parent arteries that include the vertebral arteries, ascending cervical arteries, segmental
arteries of the trunk, posterior intercostal arteries, subcostal and lumbar arteries in the abdomen,
and iliolumbar and lateral and medial sacral arteries in the pelvis.
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The periosteal and equatorial branches arise from these parent arteries as they travel along the
antero-lateral surface of the vertebrae.