Anatomy study note · Thorax
Brachiocephalic artery
The first and largest branch of the aortic arch. It runs up to the right of the trachea and divides behind the right sternoclavicular joint into the right subclavian and right common carotid arteries.
Key points
- 1st branch of the arch.
- Divides behind the right sternoclavicular joint.
- → right subclavian + right common carotid.
- Brachiocephalic: right horn of the aortic sac.
- Elastic artery: 40–70 fenestrated elastic membranes in the media.
- Damps the pressure pulse.
The full note in the atlas also covers
Relations · Histology · Development
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Written from
- Snell’s Clinical Anatomy by Regions, 10th ed., ch. 5, PDF pp. 644, 647
- Inderbir Singh’s Human Embryology, ch. 15, PDF pp. 250–251
- BRS Cell Biology & Histology, 7th ed., ch. 11, PDF pp. 197–200
More from the thorax
- Brachiocephalic veins
- Bronchopulmonary segments
- Coronary sinus and cardiac veins
- Costal cartilages
- Descending thoracic aorta
- Diaphragm
- Esophagus
- First rib
- Heart
- Intercostal arteries
- Intercostal muscles
- Intercostal nerves
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