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in the interior of the ear, a considerable branch of the tri-
facial which is liable to become neuralgic.
The inferior-maxillary nerve
is the third great division of
the tri-facial. It first escapes
through the foramen ovale,
and immediately divides into
two principal trunks, the ex-
ternal and the internal, which
are separated by the external
pterygoid muscle. I should
have said that the inferior max-
illary branch of the tri-facial is
partly motor; and it is in the
external branch of this, that wo
find nearly the whole of its
motor roots. This external
branch divides at once into
Fig. 69. The TriFacial Nerve, or Fifth Pair; fQur brandies, which ai'0 dig-
giving a view of the Distribution of its three
grand Trunks. triblltcd to tllC tempOl'O-niaXll-
1. Orbit.
2. Antrum Highmorianura.
3. Tongue.
4. Lower Jawbone.
5. Root of the Fifth Pair, forming the
Ganglion of Gasser.
6. First Branch of the Fifth Pair, or
Ophthalmic.
7. Second Branch of the Fifth Pair, or
the Superior Maxillary.
S. Third Branch of the Fifth Pair, or
Inferior Maxillary.
9. Frontal Branch, dividing into the
External and Internal Frontal
Nerves.
10. Lachrymal Branch of the Fifth Pair.
11. Nasal Branch. Just under the fig-
ure is the long Root of the Len-
ticular or Ciliary Ganglion, and
a few of the Ciliary Nerves.
12. Internal Nasal Nerve, disappearing
through the anterior ethmoid fo-
ramen.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
External Nasal Nerve.
External and Internal Frontal Nerve.
Infra-Orbital Nerve.
Posterior Dental Branches.
Middle Dental Branches.
Anterior Dental Branches.
Terminating Branches of the Infra-
Orbital Nerve, also called the La-
bial and Palpebral Nerves.
Sub-cutaneous Mala;, or Orbital
Branch.
Pterygoid, or recurrent Nerve from
Meckel's Ganglion.
Five Anterior Branches of the Third
Branch of the Fifth Pair.
Lingual Branch of the Fifth, joined
by the Chorda Tympani.
Inferior Dental Nerve.
Its Mental Branches.
Superficial Temporal Nerve.
Auricular Branches.
Mylo-Hyoid Branch.