The left side of the posterior thoracic wall drains blood into the

Question

Quizplus · Accepted Answer

The left side of the posterior thoracic wall receives blood from the intercostal veins which drain into the hemiazygos vein, highest intercostal vein, and esophageal veins. The hemiazygos vein then crosses the midline to drain into the azygos vein on the right side, while the highest intercostal vein directly drains into the left brachiocephalic vein. Therefore, the left side of the posterior thoracic wall ultimately drains into both the hemiazygos vein and highest intercostal vein.

The Left Side of the Posterior Thoracic Wall Drains Blood