| Interatrial septum | |
|---|---|
 Interior of right side of heart. (labeled at left of image, as 'atrial septum') | |
 Interior of dorsal half of heart of human embryo of about thirty-five days. | |
| Details | |
| Identifiers | |
| Latin | septum interatriale |
| MeSH | D054087 |
| TA98 | A12.1.00.019 |
| TA2 | 3964 |
| FMA | 7108 |
| Anatomical terminology | |
The interatrial septum is the wall of tissue that separates the right and left atria of the heart.