Conus arteriosus
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| Conus arteriosus | |
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| Sternocostal surface of heart. (Conus arteriosus visible at top center.) | |
| Gray's | subject #138 531 |
| Dorlands/Elsevier | c_54/12257620 |
The upper and left angle of the right ventricle forms a conical pouch, the conus arteriosus, from which the pulmonary artery arises.
A tendinous band, which may be named the tendon of the conus arteriosus, extends upward from the right atrioventricular fibrous ring and connects the posterior surface of the conus arteriosus to the aorta. This is also called the infundibulum, and it is the entrance from the right ventricle into the pulmonary artery and pulmonary trunk. The wall of the infundibulum is smooth.
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