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.
The mastoid foramen is a hole in the posterior border of the temporal bone of the skull. [1]
The opening of the mastoid foramen is an average of 18 mm from the asterion, [2] and around 34 mm from the external auditory meatus. [3] It is typically very narrow. [1] [3] This may be around 2 mm. [3]
The position and size of this foramen are very variable. [1] [3] It is not always present. [1] [3] Sometimes, it is duplicated on one side or both sides. [1] Sometimes, it is situated in the occipital bone, or in the suture between the temporal bone and the occipital bone.
The mastoid foramen transmits:
This article incorporates text in the
public domain from
page 141 of the 20th edition of
Gray's Anatomy (1918)
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.
The mastoid foramen is a hole in the posterior border of the temporal bone of the skull. [1]
The opening of the mastoid foramen is an average of 18 mm from the asterion, [2] and around 34 mm from the external auditory meatus. [3] It is typically very narrow. [1] [3] This may be around 2 mm. [3]
The position and size of this foramen are very variable. [1] [3] It is not always present. [1] [3] Sometimes, it is duplicated on one side or both sides. [1] Sometimes, it is situated in the occipital bone, or in the suture between the temporal bone and the occipital bone.
The mastoid foramen transmits:
This article incorporates text in the
public domain from
page 141 of the 20th edition of
Gray's Anatomy (1918)