| Front | Posterior intercostal arteries |
|---|---|
| Back | Structure: segmental pairs of small branches arising from the posterolateral sides of the descending aorta. 1. Left side branches immediately enter the intercostal spaces 2. Right side branches pass over vertebral column before entering intercostal spaces 3. Anastomose with anterior intercostal arteries Function: supply blood to posterior and lateral thoracic wall, vertebral column, spinal cord, and skin of dorsal body wall |
Tags: arteries
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