| Mastoid foramen | |
|---|---|
 Left temporal bone. Inner surface. (Mastoid foramen labeled at bottom left.) | |
 Base of the skull. Upper surface. (Temporal bone is pink, and label for mastoid foramen is at left, second from the bottom.) | |
| Details | |
| Part of | Temporal bone of skull |
| System | Skeletal |
| Identifiers | |
| Latin | foramen mastoideum |
| TA98 | A02.1.06.008 |
| TA2 | 649 |
| FMA | 53159 |
| Anatomical terms of bone | |
The mastoid foramen is a hole in the posterior border of the temporal bone. It transmits an emissary vein between the sigmoid sinus and the suboccipital venous plexus, and a small branch of the occipital artery, the posterior meningeal artery to the dura mater.