Podcast
Questions and Answers
Which artery supplies the upper two intercostal spaces?
Which artery supplies the upper two intercostal spaces?
- Costocervical trunk (correct)
- Posterior intercostal artery
- Internal thoracic artery
- Subclavian artery
From which artery do the posterior intercostal arteries of the 3rd-11th intercostal spaces arise?
From which artery do the posterior intercostal arteries of the 3rd-11th intercostal spaces arise?
- Subclavian artery
- Axillary artery
- Thoracic aorta (correct)
- Costocervical trunk
Where do the posterior intercostal veins drain?
Where do the posterior intercostal veins drain?
- Azygos venous system (correct)
- Internal thoracic veins
- Subclavian veins
- Superior vena cava
Which vein drains into the internal thoracic veins?
Which vein drains into the internal thoracic veins?
Which vessel arches over the hilum of the right lung and enters the posterior aspect of the superior vena cava?
Which vessel arches over the hilum of the right lung and enters the posterior aspect of the superior vena cava?
Which intercostal arteries run a longer course due to the position of the thoracic aorta?
Which intercostal arteries run a longer course due to the position of the thoracic aorta?
Flashcards
Artery supplying upper intercostal spaces?
Artery supplying upper intercostal spaces?
Costocervical trunk
Origin of posterior intercostal arteries (3rd-11th)?
Origin of posterior intercostal arteries (3rd-11th)?
Thoracic aorta
Where do posterior intercostal veins drain?
Where do posterior intercostal veins drain?
Azygos venous system
Vein draining into internal thoracic veins?
Vein draining into internal thoracic veins?
Anterior intercostal vein
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Vessel arching over right lung hilum?
Vessel arching over right lung hilum?
Azygos vein
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Intercostal arteries with a longer course?
Intercostal arteries with a longer course?
Right 3rd-11th intercostal arteries
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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.
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