Anatomical Structure and Location of the Arteries of the Upper Body

Description

Seen in left lateral profile, the arterial tree arises from the ascending aorta and aortic arch within the thorax, then continues as the descending thoracic aorta posterior to the heart and along the vertebral column. Superiorly, the arch gives rise to the brachiocephalic trunk, left common carotid artery, and left subclavian artery, with the common carotid ascending in the neck toward the skull base while the subclavian courses laterally beneath the clavicle toward the axilla. Distally, the upper limb pathway is readable as axillary artery to brachial artery along the medial arm, with branching toward the forearm and hand; segmental intercostal arteries track between ribs, closely related to the costal cartilages and thoracic vertebrae. Bone landmarks anchor orientation. The rib cage, scapula, humerus, and lateral skull provide clear spatial context for each vessel’s course. A lateral presentation like this clarifies relationships that are harder to appreciate in anterior views, including how the aortic arch sits superior to the pulmonary outflow tract and how the descending aorta hugs the left side of the thoracic spine. That matters in endovascular planning and trauma teaching, where you need a mental map for blunt thoracic aortic injury near the aortic isthmus just distal to the left subclavian origin. The same vessel geometry guides central line and pacemaker approaches at the thoracic inlet, where the subclavian artery lies posterior and superior to the subclavian vein and close to the first rib. Use this artwork in gross anatomy and cardiothoracic modules to teach the aorta, arch branches, and upper limb arterial continuity, or in emergency medicine and radiology education when correlating with lateral chest imaging and CT angiography orientation. It also suits textbooks, procedural atlases, and patient-facing material explaining arterial access routes for coronary angiography via brachial or radial approaches. Anatomical accuracy verified by SciePro's Medical Advisory Board.