| Label | Id | |
|---|---|---|
| Middle internodal tract | http://purl.org/sig/ont/fma/fma9482 | |
| Middle internodal fasciculus | http://purl.org/sig/ont/fma/fma9482 | |
| Internodal tract of Wenckebach | http://purl.org/sig/ont/fma/fma9482 | |
| Middle internodal tract muscle tissue | http://purl.org/sig/ont/fma/fma9482 | |
| Posterior internodal tract | http://purl.org/sig/ont/fma/fma9483 | |
| Internodal tract of Thorel | http://purl.org/sig/ont/fma/fma9483 | |
| Posterior internodal fasciculus | http://purl.org/sig/ont/fma/fma9483 | |
| Posterior internodal tract muscle tissue | http://purl.org/sig/ont/fma/fma9483 | |
| Atrioventricular bundle | http://purl.org/sig/ont/fma/fma9484 | |
| Bundle of His | http://purl.org/sig/ont/fma/fma9484 | |
| Atrioventricular fasciculus | http://purl.org/sig/ont/fma/fma9484 | |
| Atrioventricular bundle muscle tissue | http://purl.org/sig/ont/fma/fma9484 | |
| Accessory atrioventricular bundle | http://purl.org/sig/ont/fma/fma9485 | |
| Bundle of Kent | http://purl.org/sig/ont/fma/fma9485 | |
| Right branch of atrioventricular bundle | http://purl.org/sig/ont/fma/fma9486 |