MUSCULAR SYSTEM. 147 



MUSCLES OF THE HAUNCH. 



1— GLUTEAL REGION. 



Comprehending the three gluteal muscles, which compose 

 the superior part of the haunch or quarter. 



GLUTEUS EXTERN us. — lUo-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 



lie/atibns. — Externally, with the faschia and skin ; internally, 

 with the gluteus maximus; anteriorly, with the tensor vaginae ; 

 posteriorly, with the biceps adductor. 



Direction. — Convergent, 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 with 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. — Uio-trochauterius Magnus. 



Situation.— Antev'iov, 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 vertebrse, 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 ; 

 internally, with the dorsum ilei and gluteus internus ; anteriorly 

 with the tensor vaginae ; posteriorly, with the lumbar and sacral 

 spines and biceps adductor. 



Structure. — This is a bulky muscle, coarse and dark-coloured 

 in its texture ; wholly fleshy, excepting some broad tendinous 



