Blood Vessels of the Chest

Description

Anterior thoracic anatomy is presented through the rib cage, with the heart centered in the mediastinum behind the sternum and costal cartilages. Intercostal vessels course within each intercostal space along the inferior margin of the corresponding rib, where the neurovascular bundle typically lies in the costal groove between the internal and innermost intercostal muscles. Branching arterioles and capillary networks spread laterally toward the midaxillary line, while companion veins track back medially toward the internal thoracic and azygos venous pathways. Fine nerve elements run with the vessels. Tightly coupled anatomy. For teaching the thoracic wall, few relationships matter more than the inferior rib border and its sheltered bundle, because that anatomic habit dictates both safe access and common injury patterns. Intercostal artery laceration is a known cause of rapid hemothorax after rib fracture or chest tube placement, and the posterior intercostal arteries can be a challenging bleeding source near the angle of the rib and paravertebral region. Understanding the segmental supply also frames referred pain patterns from intercostal nerve irritation and the vascular considerations in thoracotomy, VATS port placement, and intercostal nerve blocks. Use this artwork in gross anatomy and cardiothoracic modules to anchor rib level orientation, segmental vascular supply, and the artery vein nerve relationship in the intercostal space. It also fits trauma education, procedural manuals for tube thoracostomy, and surgical atlases discussing thoracic incisions, costal cartilage work, and parasternal approaches where internal thoracic vessels become relevant landmarks. Anatomical accuracy verified by SciePro's Medical Advisory Board.