VETERINARIAN. 
vol. ii. NOVEMBER, 1829. 
ANATOMY OF THE HORSE. 
[Continued from page 402.] 
5.— ANTERIOR MAXILLARY REGION, 
Comprising the muscles whose office it is to move the lower jaw. 
temporalis. — Temporo-maxil laris. 
Situation. —Upon the parietal and temporal bones. 
Form —Convex, externally; concave, internally: broad, above ; 
narrow and convergent, below. 
Attachment. —Superiorly, to the vertex and the anterior occipi¬ 
tal bone; to the convex surface of the parietal; to the squamous 
plate and zygomatic process of the temporal bone ; and to a small 
portion of the frontal: inferiorly, to the coronoid process of the 
inferior maxilla. 
Relations. —Externally, with the attollentes aurem and the zy¬ 
goma ; internally, the cranial bones; postero-externally, the ear ; 
anteriorly, a volume of fatty substance lodged at the back of the 
orbit. 
Direction. —From behind, forwards; and from above, down¬ 
wards : the fibres taking a curvilinear course. 
Structure. —Covered by a dense aponeurotic expansion, deno¬ 
minated the temporal faschia ; the broad part of the muscle is 
fleshy, but is intersected horizontally through its middle by a 
layer of tendon. Below, it is tendinous in its attachments to the 
sharp edges of the coronoid process; but fleshy around the sides 
of it. 
Action. — To raise the lower against the upper jaw; and, 
thereby, when the mouth is opened, to shut it again. It is one 
of the principal agents in manducation. 
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