| Infundibulum | |
|---|---|
 Sternocostal surface of heart. (Infundibulum (Conus arteriosus) visible at top center.) | |
| Details | |
| Identifiers | |
| Latin | infundibulum |
| TA98 | A12.1.02.008 |
| TA2 | 4041 |
| FMA | 7216 |
| Anatomical terminology | |
Theinfundibulum (also known asconus arteriosus) is a conical pouch formed from the upper and left angle of theright ventricle in thechordateheart, from which thepulmonary trunk arises. It develops from thebulbus cordis. Typically, the infundibulum refers to the corresponding internal structure, whereas the conus arteriosus refers to the external structure. Defects in infundibulum development can result in a heart condition known astetralogy of Fallot.
A tendinous band extends upward from theright atrioventricular fibrous ring and connects the posterior surface of the infundibulum to theaorta. The infundibulum is the entrance from the right ventricle into the pulmonary artery and pulmonary trunk. The wall of the infundibulum is smooth.
This article incorporates text in thepublic domain frompage 531 of the 20th edition ofGray's Anatomy(1918)
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