484 
ANATOMY OF THE MORSE. 
teres minor.— (Superscapulo-trochiterius.) 
Situation. —Upon the outer and posterior part of the shoulder, 
below and behind the postea-spinatus. 
Form .—Elongated ; trilateral; flattened. 
Attachment .—Superiorly, to the posterior costa of the scapula: 
inferiorly, to the ridge descending from the tubercle of the hu¬ 
merus ; and to the faschia a little above and to the outer side of 
the bend of the arm. 
Relations .— Anteriorly and superiorly, with the postea-spina¬ 
tus ; posteriorly and inferiorly, with the triceps : above with the 
scapula; below, with the humerus: externally, with the panni- 
culus. 
Structure .—Mostly covered by a dense aponeurosis. Below, 
it is entirely aponeurotic, and spreads over the infero-external 
part of the shoulder. 
Action .—It will co-operate with the postea-spinatus. 
4.—ANTERIOR HUMERAL REGION. 
CORACO-HUMERALIS. 
Situation .—Infero-internal part of the shoulder. 
Form.— Pyramidal: base turned downwards; flattened from 
without inwards. 
Attachment .—Superiorly, to the coracoid process of the sca¬ 
pula: inferiorly, to the middle third of the antero-internal part of 
the body of the humerus. 
Relations .—Externally, with the pectoralis transversus and 
the ribs, also with the humeral blood-vessels and nerves; inter¬ 
nally, with the body of the humerus; antero-inferiorly, with the 
flexor brachii; postero-superiorly, with the teres major and 
latissimus dorsi; superiorly, its tendon runs between the sub- 
scapularis arid antea-spinatus. 
Structure .—A flattened tendon, about three inches in length, 
forms its superior attachment; from which extends a fleshy belly, 
partly aponeurotic upon its surfaces, and intersected in places 
through its substance by tendinous divisions. Its lower attach¬ 
ment is principally (but not entirely) fleshy. . 
Action. —To extend the shoulder joint; and to incline the 
humerus inwards. 
flexor brachii. — (Coraco-raclialis.) 
Situation .—Antero-inferior part of the shoulder. 
Form.— Cylindroid: flattened, superiorly, from before back¬ 
wards; inferiorly, from side to side. 
