The left 1st posterior intercostal vein drains into which one of the following?
Understand the Problem
The question is asking which vein the left 1st posterior intercostal vein drains into, providing multiple choice options for the answer.
Answer
Brachiocephalic vein or vertebral vein
The left 1st posterior intercostal vein drains into the brachiocephalic vein or vertebral vein.
Answer for screen readers
The left 1st posterior intercostal vein drains into the brachiocephalic vein or vertebral vein.
More Information
The 1st posterior intercostal vein, known as the supreme intercostal vein, can drain into either the brachiocephalic vein or the vertebral vein.
Tips
Ensure you differentiate between the drainage of the 1st and other posterior intercostal veins. The 1st vein has specific drainage distinct from the others.
Sources
- Intercostal veins: Anatomy, drainage, clinical aspects - Kenhub - kenhub.com
- Venous drainage of the thoracic wall | Radiology Reference Article - radiopaedia.org
- Wikipedia - Posterior intercostal veins - en.wikipedia.org
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