_1_, Œsophagus; _2_, larynx; _3_, mouth cavity; _4_, epiglottis; _5_,
arytenoid cartilage; _6_, soft palate; _6″_, position of soft palate
when raised; _7_, vomer; _8_, base of cranium; _9_, root of tongue;
_a_, _a′_, _a″_, pharynx; _b_, fornix of pharynx; _c_, posterior
wall of pharynx; _d_, floor of pharynx; _e_, pharyngeal surface of
soft palate; _f_, origin of œsophagus; _g_, vestibule of larynx;
_h_, isthmus faucium; _i_, Eustachian opening; _k_, posterior naris.
(After Ellenberger, in Leisering’s Atlas.)
]
The =sublingual gland= is divided into two parts. The posterior part
(Glandula sublingualis grandicanalaris) lies on the digastricus muscle
in intimate relation with the submaxillary gland, but clearly separable
from it after removal of the common fibrous capsule. It has a pointed
anterior process. The =duct= (Ductus sublingualis major) accompanies the
submaxillary duct, and usually opens beside it, but in some cases joins
it. The anterior part (Glandula sublingualis parvicanalaris) is long and
narrow; it lies on the stylo-glossus muscle. It has a number (8 to 12)
of small ducts (Ductus sublinguales minores), some of which open
directly into the mouth, while others join the large duct.
The =orbital= or =zygomatic gland= (Glandula zygomatica) represents the
superior molar glands of herbivora. It is prismatic and is situated in
the orbital region, between the zygomatic arch and the internal
pterygoid muscle, in contact with the periorbita. It has four or five
=ducts= (Ductus zygomatici) which open near the last upper cheek tooth;
one of them (canal of Nuck) is almost as large as the parotid duct; the
others are small.