Veins from the Abdominal and Thoracic Walls

Tributaries of the brachiocephalic and azygos veins drain the abdominal and thoracic walls. For example, the brachiocephalic vein receives blood from the internal thoracic vein, which generally drains the tissues the internal thoracic artery supplies. Some intercostal veins also empty into the brachiocephalic vein (fig. 15.56).

The azygos (az'i-gos) vein originates in the dorsal abdominal wall and ascends through the mediastinum on the right side of the vertebral column to join the superior vena cava. It drains most of the muscular tissue in the abdominal and thoracic walls.

Tributaries of the azygos vein include the posterior intercostal veins on the right side, which drain the intercostal spaces, and the superior and inferior hemiazygos veins, which receive blood from the posterior intercostal veins on the left. The right and left ascending lumbar veins, with tributaries that include vessels from the lumbar and sacral regions, also connect to the azygos system.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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  • natalie
    What blood vessels drain blood from thoracic and abdominal wall?
    5 years ago

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