Tin: 
VETERINARIAN. 
VOL. III. 
SEPTEMBER, 1830. 
No. 33. 
ANATOMY OF THE HORSE. 
[Continued from page 426.] 
MUSCLES OF THE EXTREMITIES. 
Of the three hundred and odd muscles reckoned in the whole 
body, upwards of one hundred are to be found in the four ex¬ 
tremities. 
% 
MUSCLES OF THE FORE EXTREMITIES. 
In number, forty-eight; and they admit of being classed into 
two general divisions—those of the shoulder, and those belong¬ 
ing to the arm and leg. Both divisions are, more or less, in¬ 
vested by the scapular and humeral portions of muscles coming 
from the trunk; most of which give origin to aponeurotic expan¬ 
sions, that descend and subsequently form the humeral and bra¬ 
chial faschia. Upon the outer and posterior sides w r e find the 
panniculus; upon the fore parts, the levator humeri, pectoralis 
parvus et magnus ; upon the hind and inner parts, the pectoralis 
transversus; upon the internal side, the latissimus dorsi. Upon 
the shoulder the faschia is thin, weak, and transparent; and 
has (besides its connexions with the various muscles mentioned) 
attachments to the superior costa and spine of the scapula, to the 
tubercles and projections of the humerus, and to the olecranon. 
jt ?. i 
MUSCLES OF THE SHOULDER 
Are twelve in number. 
1.—EXTERNAL SCAPULAR REGION 
Comprehends two muscles occupying the dorsum scapula. These 
are enveloped in distinct portions of dense faschia, from which 
septa are sent down between them, and to the inner surfaces of 
which, in many places, the fleshy fibres are inseparably ad¬ 
herent. 
3 T 
VOL. III. 
