6 Questions
Which artery supplies the upper two intercostal spaces?
Costocervical trunk
From which artery do the posterior intercostal arteries of the 3rd-11th intercostal spaces arise?
Thoracic aorta
Where do the posterior intercostal veins drain?
Azygos venous system
Which vein drains into the internal thoracic veins?
Anterior intercostal vein
Which vessel arches over the hilum of the right lung and enters the posterior aspect of the superior vena cava?
Azygos vein
Which intercostal arteries run a longer course due to the position of the thoracic aorta?
Right 3rd-11th intercostal arteries
Study Notes
Intercostal Arteries and Veins
- The costocervical trunk supplies the upper two intercostal spaces.
- The posterior intercostal arteries of the 3rd-11th intercostal spaces arise from the thoracic aorta.
- The posterior intercostal veins drain into the azygos vein on the right and the accessory hemiazygos vein and hemiazygos vein on the left.
- The internal thoracic vein drains into the subclavian vein.
- The azygos vein arches over the hilum of the right lung and enters the posterior aspect of the superior vena cava.
- The right posterior intercostal arteries run a longer course due to the position of the thoracic aorta on the left side of the vertebral column.
Test your knowledge of the neurovascular bundle in the thoracic wall, including the origins of intercostal arteries and veins. This quiz will cover topics such as the posterior intercostal vein, posterior intercostal artery, and the sources of blood supply for intercostal spaces.
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