LYMPHATIC SYSTEM OF THE OX AND SHEEP 723 
long and an inch (ca. 2-8 cm.) wide. In some cases a second, smaller gland is 
present. Its position is variable; it may be behind or dorsal-medial to the large 
gland, or may be on the deep face of the ventral end of the mandibular salivary gland. 
Hezmolymph glands often occur in this vicinity. The efferent vessels come from 
the muzzle, lips, cheeks, hard palate, the anterior part of the turbinates and septum 
nasi, the gums (in part); the sublingual and parotid glands; the tip of the tongue, 
the muscles of the head, except those of the eye, ear, tongue, and hyoid bone; the 
mandible, premaxilla, and nasal bone; the skin of the face in part. It also receives 
the efferent vessels of the pterygoid lymph gland when present. The efferent 
vessels, two to four in number, go to the atlantal gland. 
The parotid lymph gland (Lg. parotidea) lies on the posterior part of the mas- 
seter muscle and is partly covered by the dorsal end of the parotid salivary gland. 
It is related deeply to the internal maxillary and superficial temporal vessels and 
the superficial temporal nerve. It is about three inches (ca. 6-8 em.) long and about 
an inch (ca. 2-3 cm.) wide. In some cases there are instead two smaller glands. 
Fic. 603.—ScuperriciaL Lympx Granps or Cow Prosectep oN SurFace oF Bopy. 
1, Mandibular; 2, parotid; 3, atlantal; 4. parapharyngeal; 5, anterior cervical: 6, midGle cervical; 7, prescapular; 
8, prefemoral. (With use of fig. in Ellerberger-Baum, Anat. f. Kiirstler.) 
The afferent vessels come from the muzzle, lips, the gums (in part), the anterior 
part of the turbinates and septum nasi; the parotid salivary gland; most of the 
muscles of the head, including those of the eye and ear; the eyelids, lacrimal gland 
and external ear; the frontal, malar, nasal and premaxillary bones and the mandible; 
the skin of the head in great part. The efferent vessels, eight to twelve in number, 
go to the atlantal gland. 
The suprapharyngeal lymph glands (Legg. suprapharynge)! are usually two 
in number, right and left. They are situated about an inch apart, medial to the 
great cornu of the hyoid bone, and between the pharynx and the ventral straight 
muscles of the head (Fig. 386). They average about three inches (ca. 6-8 cm.) 
in length. In some cases an additional gland is present. The afferent vessels come 
from the tongue, the floor of the mouth, the hard palate, the soft palate, the gums 
(in part), the pharynx, the sublingual and mandibular salivary glands; the posterior 
1 Also commonly termed the retropharyngeal glands. 
