MUSCLES OF THE PELVIC LIMBS. 187 



between these points it is united with the tendon of the vastus 

 lateralis ; it thus gains insertion into the patella. At its proxi- 

 mal end the fascia receives the insertion of the tensor fascia; 

 latoe (Fig. 68, r). 



M. tensor fasciae latse (Fig. 68, r, page 117; Fig. 92, a). 

 The tensor fasciae latae is a thick triangular muscle which 

 may be recognized by its insertion into the proximal end of the 

 fascia lata (Fig. 68, z; Fig. 92, a'). 



Origin by fleshy fibres as a thick triangular prism from the 

 outer margin of the ventral border of the ilium craniad of the 

 auricular impression and from the fascia covering the ventral 

 border of the gluteus medius (Fig. 90, <) over its cranial half. 

 The caudal border of the muscle may be continuous with the 

 cranial border of the gluteus maximus. The muscle spreads 

 out in a fan-like manner, covering the proximal third of the 

 dorsal surface of the thigh. The cranial fibres pass farther 

 distad than the others. 



Insertion into the fascia lata (Fig. 68, z] along an irregular 

 line which begins caudad at the base of the great trochanter 

 and ends on the cranial side of the thigh at the junction of the 

 first and second thirds. 



Relations. Outer surface with the cutaneus maximus 

 (Fig. 62, b, page 94) and craniad with the sartorius (Fig. 

 68, q]. Cranial border with the sartorius (^); caudodorsal 

 border with the gluteus medius (Fig. 90, b}. Inner surface 

 with the gluteus medius, the rectus femoris (Fig. 92, ^), and 

 the vastus lateralis (Fig. 90, d\ 



Action indicated by the name. It also assists the quad- 

 riceps femoris in extending the leg. 



M. gluteus maximus. The gluteus maximus is a rather 

 small quadrangular muscle in the angle between the gluteus 

 medius (Fig. 90, ^) and the caudal vertebrae. 



Origin (Fig. 163, 3, page 401) by fleshy fibres from the tips 

 of the transverse processes of the last sacral and the first caudal 

 vertebrae, from the fascia covering the spinous muscles dorsad 

 of the transverse processes of these vertebras, and from the 

 fascia covering the gluteus medius. The muscle passes laterad 

 and slightly caudad to its 



