Stylomastoid foramen

Definition

The stylomastoid foramen is a small opening located between the styloid and mastoid processes of the temporal bone in the skull, through which the facial nerve exits the skull. It is crucial for transmitting motor signals to the facial muscles.

Related terms

Facial Nerve:

A cranial nerve that controls most of the muscles involved in facial expression.

Temporal Bone:

A large bone forming part of the side of the skull and containing the middle and inner parts of the ear.

Mastoid Process: A conical projection at the bottom part of the temporal bone that serves as an attachment point for several neck muscles