102 THE MUSCLES. 



covering" the hinder part of the 7)i. glidaean^ and is inserted into the 

 outer surface of the middle third of the femur. 



125. M. quailratiis femons (Fig\ 84 qf)- 



Dugès, post-ilio-fémoral (Homologue of the ^?((<«t'«« maximus), n. 197. — 

 Zenker, glataeiis minor, p. 42. 



This muscle is of a somewhat elongated, triangular shape, and 



arises, under cover of the pp- /form is, from the ilium behind the ace- 



tabuhun ; it passes backwards over the joint to be inserted into the 



inner and under surfaces of the femur, between the pyriformis and 



ilio-psoas ; below, it is in direct relation with the adductor brevis. 



126. M. ohturatorius (Fig-s. 84, 85 og). 



Dugès, ischio-pubi-fémoral, n. I39(^). — Zenker, m. capsularisfemoris. 



This small muscle is deeply situated upon the hip-joint, and 

 covered by all the other muscles that arise from the symphysis. Its 

 origin from the innominate bone extends from the superior posterior 

 angle of the si/mph. ossis illl to about the middle of the pubic sym- 

 physis ; the muscle fills the sj)ace between the crest of the sym- 

 physis and the acetabulum. The fibres converge to pass into a 

 strong" tendon, which is inserted into the posterior and anterior 

 surfaces of the head of the femur. The muscle appears to represent 

 collectively the small rotators of human anatomy, ;//. obturator ex- 

 ternum and internas and the genielli. 



II. Muscles of the Leg. 



General description. 



On the outer siirface (the anterior of man), covered by the fascia 

 cruris, into which the tendon of the extensor communis cruris or 

 triceps is prolong-ed, are found the following" muscles : nearest to the 

 bone, the ;«. extensor cruris brevis {ec) ; externally, the m. tibialis 

 anticus {ta) and the m. peroneus (pe). On the inner surface (the 

 hinder of man) lie the gastrocnemius (gc) and titAalis posticus {tp), and 

 deeply the jlexor tarsi sup. (ft). 



127. 31. gastrocnemius (Yiga. 80, 8r, 86). 



Dugès, bi-fémoro-plantaire, n. 159. 



This important muscle arises by two tendinous heads. The one 

 (Fig. 86 //) rather nearer the middle line of the popliteal space, is 

 by far the stronger : it arises by a broad, tendinous expansion, 

 which covers the knee-joint, and is attached to the femi^r and the 

 tibio-fibula by anterior and posterior bands respectively ; it ends 



