DISSECTION OF THE DOG 



119 



nerve are to be found. The muscles exposed are the three rhomboids, 

 the omo-transverse and the latissimus dorsi. 



M. EHOMBOiDBUS CEEViCALis.— The cervical rhomboid takes origin from 

 the Hgamentum nuchas as far towards the head as a level with the second or 

 third cervical vertebra, and from the spinous processes of the first two or three 

 thoracic vertebrae. It is inserted into the medial face of the cranial angle 

 of the scapula. 



777. rhamboideus 

 ceTvicalis 



\ 777. ilio-costalis 



\ 

 — v__ 

 \ 



777. longissimus dorsi 



\ 



\ 



a. subscapidaris 

 m. rliomboideus ' 

 thofacalis ' 



777. serratus J / 



dorsalis 



m. splenius 

 1 



" i - 

 I 

 I 





f^ 





SgP" 



m. longus capitis 

 ' m. serratus ventralis 



m. obliguus 

 abdominis externus 



■ ^ m. supraspinatus 



" m. infraspinatus 



> m. teres major 

 - n.to m. deltoideus 



--S'SS}-«'^^^™'«' 



777. rectjis 



abdominis / 



m. serratus f 



ventralis \ / 



777. pectorOiis ' 

 "profundus , 

 a. circumflexa 

 humeri posterior 



Fig. 45. — Dissection of the shoulder after removal of the more superiicial muscles. 



M. EHOMBOiDETTS CAPITIS. — This might reasonably be described as a part 

 of the cervical rhomboid, since the two blend towards a common insertion. 

 The muscle consists of a thin strip arising from the occipital bone. 



M. EHOMBOIDETTS THORACALis. — The thoracic rhomboid is a very much 

 shorter and feebler muscle than the cervical rhomboid. It arises from the 

 spinous processes of the fourth to the sixth or seventh thoracic vertebrae, and 

 is attached to the scapula immediately caudal to the insertion of the cervical 

 rhomboid. 



M. OMO-TEANSVEESAEITJS. — The omo-transverse is a band-like muscle 

 running from the wing of the atlas to the distal part of the spine of the 

 scapula and the fascia over the deltoid. 



