Anatomy study note · Thorax

Aortic valve

The semilunar valve at the exit of the left ventricle into the aorta, with three cusps: right coronary, left coronary and posterior (noncoronary).

Key points

• 3 cusps: right coronary, left coronary, posterior (noncoronary).
• Coronary arteries arise from the aortic sinuses.
• Auscultation: 2nd right intercostal space.
• Semilunar valves: truncoconal cushions, 3 cusps each.
• Valve = fibrous core covered by endothelium.
• Rheumatic disease: mitral > aortic.

The full note in the atlas also covers

Features · Histology · Development · Clinical notes

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Written from

• Snell’s Clinical Anatomy by Regions, 10th ed., ch. 5, PDF pp. 615, 630–633
• Inderbir Singh’s Human Embryology, ch. 15, PDF pp. 241, 244
• BRS Cell Biology & Histology, 7th ed., ch. 11, PDF p. 196

More from the thorax

• Arch of aorta
• Ascending aorta
• Azygos vein
• Brachiocephalic artery
• Brachiocephalic veins
• Bronchopulmonary segments
• Coronary sinus and cardiac veins
• Costal cartilages
• Descending thoracic aorta
• Diaphragm
• Esophagus
• First rib

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