Arteries

Description

Posteriorly, the descending thoracic aorta tracks along the left anterolateral aspect of the vertebral bodies before passing through the aortic hiatus to become the abdominal aorta, which then bifurcates inferior to the umbilicus into the right and left common iliac arteries. Superiorly, the aortic arch gives rise to the brachiocephalic trunk, left common carotid artery, and left subclavian artery, with paired vertebral arteries ascending through the transverse foramina toward the posterior cranial fossa. Red arterial channels course laterally into the upper limbs via the subclavian to axillary to brachial arteries, and into the lower limbs via the external iliac to femoral to popliteal and tibial vessels, while blue venous pathways and a semi-transparent spine and rib cage provide orientation. Small-caliber vessels are suggested peripherally. Clear color separation keeps oxygenated and deoxygenated flow visually distinct. A posterior full-body vascular map is the teaching view for how the aorta relates to the spine and posterior thoracic wall, and it clarifies why posterior approaches to the thoracic and lumbar spine must respect segmental vessels. Intercostal and lumbar arteries, and the variable artery of Adamkiewicz, sit in the surgical corridor during deformity correction and thoracoabdominal aortic repair, where inadvertent compromise can produce spinal cord ischemia. Landmarking the iliac bifurcation against the lumbosacral junction also matters in endovascular planning, since device access and graft deployment depend on pelvic vessel caliber and angulation. Use this artwork in gross anatomy and physiology courses to anchor arterial branching patterns, in radiology teaching files when correlating CTA or MRA with surface orientation, and in patient-facing explanations for atherosclerotic disease, aneurysm surveillance, or peripheral arterial disease pathways from the aorta to the tibial vessels. It also fits vascular surgery and spine surgery publications that need a clean posterior reference for operative risk discussions. Anatomical accuracy verified by SciePro's Medical Advisory Board.