60^ 



THE MUSCLES. 



12. M. lateralis uarium. (Ecker), (Fig. 54 In). 



Zenker, m. intermaxillari» lateralis. — Klein, in. imsalis inferior. — 

 Dugès, sus-maxillo-pré-nasal, n. 2. 



This small muscle occupies the space between the anterior portion 

 of the maxillary bone and the ascending- process of the premaxillary 

 bone. It arises from the maxillary, and ascends obliquely forwards 

 to be inserted into the outer border of the ascending- process of the 

 premaxillary bone. It is antagonistic to the foregoing-. 



A third muscle is described by Dugès as sus-maxUlo-post-nmal, 

 n. 3 {iiasalis exteruus, Klein) ; according to him it passes from the 

 Ijfoc. nasalis of the maxillary bone to the outer border of the nasal 

 opening", which it widens. According- to Klein (/. c, p. 9), this 

 muscle in R. ieinporavia runs to the upper border of the maxillary bone 

 beneath the lower eyelid, and is long- and narrow. I have, however, 

 never been able to find muscular fibre in this situation. 



III. Muscles of the Lower Jaw. 



Muscles of the back and shoulder, 

 r M. cucuUaris. 



dm, dm M. depressor maxillae, arising from the fascia 



dorsalis. On the right side it is cut through 



and reflected. 

 /d Fascia dorsalis. 



/d' Same cut near the spinous processes. 



i II. infraspinatus. 



l.a M. levator anguli scapulae. 



l.d M. latissimus dorsi. 



r M. retrahens scapulae. 



sc 51. sternocleidoniaatoideus. 



1B:)M. dej^ressor viax'il- 



lae inferioris, Cams, Zenker 



(Fig-s. SS, 56, 6s d.m.). 



Cuvier, I.e., II, 141, digas- 

 tricns. — Dugès, sus-occipito- 

 dorso-angulaire, 32. 



This is a strong, trian- 

 gular musclC; wide above, 

 pointed below. It is placed 

 between the head and the 

 shoulder-blade. It arises in 

 two portions; the g-reater, 

 from the fascia dorsalis 

 [fd, ), covers the scapula, and 

 passes inwards and back- 

 wards over the muscles of 

 the back ; anteriorly it passes 

 over the m. iemporalis and 

 is attached to the fronto- 

 parietal and squamosal, 

 being- continued to the 

 fascia of the upper eyelid. 

 The second part is smaller, 

 and arises by fleshy fibres 

 from the postero-suj)erior 



