62 
ANATOMY OF THE HORSE. 
The use of the faschia lata appears to be, to give both power 
and effect to the muscles during* the time of their action, by 
retaining* them in their respective places and relative positions, 
and keeping them closely and compactly braced together. 
i . I 
MUSCLES OF THE HAUNCH. 
1.—GLUTEAL REGION. 
Comprehending the three gluteal muscles, which compose 
the superior part of the haunch or quarter. 
gluteus externus.— Iiio-trochanterius Medius. 
' Situation .—Mesio-external part of the haunch. 
Figure. —Triangular: base presented upwards. 
Attachment .—Superiorly, to the antero-superior and inferior 
spines of the ileum, to the spine of the sacrum, and to the 
faschia lumborum; inferiorly, to the trochanter minor externus. 
Relations. —Externally, with the faschia and skin ; internally, 
with the gluteus maximus; anteriorly, with the tensor vaginae; 
posteriorly, with the biceps adductor. 
Dir ection.—Conver gent , from the several superior attach¬ 
ments to the trochanter. 
Structure. —It is constituted of two fleshy divisions, having a 
broad interval between them filled by aponeurosis. The an¬ 
terior or smaller division is tendinous superiorly, and internally 
its fibres are interlaced wdth those of the gluteus maximus. 
Inferiorly, both portions unite into one common, triangular, 
fleshy belly, which ends in an aponeurotic tendon; and from 
this are sent down processes to the tibial faschia. 
Action. —The same as the other glutei. 
gluteus maximus. — Ilio-trochanterius Magnus. 
Situation .—Anterior, middle, and external parts of the 
haunch. 
Figure .—Pentagonal; sides unequal; angles rounded ; low¬ 
ermost angle extended. 
Attachment. —Superiorly, to the spinous and transverse pro¬ 
cesses of the two or three last lumbar vertebrae, to those of the 
two or three uppermost sacral, and to the faschia lumborum ; 
also to the crista of the ileum, its dorsum and posterior spine; 
lastly, to the sacro-sciatic ligaments. Inferiorly, to the trochanter 
major. 
Relations .—Externally, with the gluteus externus and skin ; 
