Chapter contents
Branchial motor
Visceral motor
Special sensory
General sensory
Peripheral lesions| Cranial Nerve VII - Facial Nerve | Page 8 of 28 |
Voluntary Control of the Muscles of Facial Expression
The portion of the nucleus that innervates the muscles of the forehead receives corticobulbar fibers from both the contralateral and ipsilateral motor cortex.
The portion of the nucleus that innervates the lower muscles of facial expression receives corticobulbar fibers from only the contralateral motor cortex.
This is very important clinically as central (upper motor neuron) and peripheral (lower motor neuron) lesions will present differently.
