►
Brain
►►
Blood vessels
C ra n ia l base
Cranial nerves
M eninges
P arts of the brain
Cranial nerves
R
Pons
Pedunculus cerebellaris médius
Ganglion geniculi
N facialis [VII]
N. stapedius
communicans cum plexu tympanico ■
Canalis nervi
Foramen stylomastoideum
R. communicans cum nervo vago
R communicans cum nervo glossopharyngeo
N auricufaris posterior
Meatus acusticus internus
N. petrosus maior
Chorda tympani
N lingualis
Rr temporales
Rr. zygomatici
Rr buccales
(R. lingualis)
R marginalis mandibularis
R. colli
Plexus
intraparotideus
-> T 57g
Fig. 476
Facial nerve, N. facialis [VII];
the facial canal and the tympanic cavity have been opened;
viewed from the right.
* Clinical term: cerebellopontine angle
Gyrus precentralis
A
Fibrae
corticonucleares
Rr. temporales
Rr zygomatici;
Rr. buccales;
R. marginalis mandibularis;
R. colli
- O
>
\
Nucleus nervi facialis
Nucleus nen/i abducentis
N. facialis [VII]
M frontalis
M. orbicularis oculi
M. levator labii superioris
M. zygomaticus major
M. zygomaticus minor
b
M orbicularis oris
Nucleus
* nervi
facialis
Fig. 477 a. b
Neuronal structure of the motor part
of the facial nerve, N. facialis [VII].
a
Overview
b
Representation of the facial muscles in the motor nucleus
of the facial nerve
Though the nuclei of the upper facial muscles receive
innervation from both hemispheres, those of the lower facial
muscles are only innervated from the contralateral side.
Therefore, patients with central palsy (*] are still able to frown
the brow and to close the eyelids just sufficiently. However, in
patients with peripheral palsy (**] all facial muscles are
paralyzed.
