Yale- Cranial Nerve 7, pg. 3 Page header & navigation buttons.


Chapter contents

Branchial motor

Visceral motor

Special sensory

General sensory

Peripheral lesions

 
Cranial Nerve VII - Facial Nerve Page 3 of 28

Origin and Central Course

The branchial motor component originates from the motor nucleus of CN VII in the caudal pons.

Fibers leaving the motor nucleus of CN VII initially travel medially and dorsally to loop around the ipsilateral abducens nucleus (CN VI) producing a slight bulge in the floor of the fourth ventricle - the facial colliculus.

Fibers then course so as to exit the ventrolateral aspect of the brainstem at the caudal border of the pons in conjunction with the nervus intermedius components of CN VII.

Figure 7-3. Brainstem section: origin and central course of the branchial motor components of the facial nerve.
 
 
Figure 7-3. Brainstem section: origin and central course of the branchial motor components of the facial nerve.

Unlabelled version.


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Last revised: March 22, 1998