460 Grace B. Watkinson 
palatino« (FISCHER) runs from nervus palatinus anterior to join with 
maxillaris just before the latter enters the alveolar canal. 
Before nervus maxillaris enters the alveolar canal two more 
branches are given off, one to the glands on the outer edge of the 
upper lip, and the other to the glands on the external border of 
the internal nares. 
e) Rami ad glandulas labiales superiores. Besides the larger 
branch given from n. alveolaris before it enters its alveolar canal, 
numerous finer branches pass through special openings in the bone 
to the large glands which border the upper lip and to the skin of 
the lip. 
f) Ramus ad glandulam palatinam lateralem. It is given off 
medially, before nervus maxillaris enters the alveolar canal, and 
innervates the lateral glands of the palatal region, extending an- 
teriorally as far as the opening of the external nares. The main 
stem of maxillaris then passes through the alveolar canal to the 
anterior extremity of the maxillary bone, sending off at intervals 
through special openings in the bone, fine branches. 
g) Rami dentales to the teeth. 
3. Ramus mandibularis, the third and largest of the trige- 
minus branches, arises from the posterior ventral portion of the 
Gasserian ganglion (semi-lunare) and turns at first direetly ventral 
then bends in an anterior direction over the lateral surface of mus- 
eulus pterygo-sphenoidalis, covered externally by the thick mass of 
m. eapiti-mandibularis. Passing external to os pterygoideum, the 
nerve takes a sharp turn anteriorally and enters as »portio alveo- 
laris inferior«, the alveolar eanal in os dentale of the mandible, and 
continues its way through the canal to the anterior tip of the man- 
dible. Its branches are the following: 
A. Rami musculares laterales are given off in several direetions 
as the nerve passes between the thick masses of the temporal 
museles, on its way to the alveolar canal. 
These are as follows: 
a) Ramus ad museulum levatorem anguli oris runs anterior 
through the portion of m. capiti-mandibularis which serves as muse. 
levator anguli oris. Fine branches are sent into the muscle and 
the terminal branches innervate the skin in the corner of the mouth. 
b) Ramus ad musculum eapiti-mandibularem is a large branch 
given off posteriorally near (a). It divides very soon into two main 
parts, one for the anterior and extermal portion and one for the 
