THE ARTERIES. 



227 



(Fiii 1 . 147 r) courses backwards lying on the transverse processes of 

 the vertebrae and on the J/J/. intertransi'erxarii, under cover of the 

 _]/. tongissimni* <far*i. In this course it is close to the oblique pro- 

 Fig. 147. 



I)issection to show the occipito- vertebral and the cutaneous arteries. 



The skin of the back has been divided by a median incision and drawn to either side ; the right arm 

 dislocated and removed through the opening in the skin (at A). On the left side the extensor 

 muscles of the back have been removed. 



e.m. Cutaneous artery. 



c.;>. Arteria cutanea pectoris. 



o Occipital artery. 



* Scapular artery. 



v Vertebral artery. 



3, and may even be partially covered by these; it extends 

 beyond the sacrum, and gives off : 



a. The Kami ajrinale*, which pass through the intervertebral 

 foramina to the spinal cord (see Arteries of Spinal Cord, p. 162). 



f3. The Kami <lorxa?rx these supply the muscles of the back and 

 send branches to the skin, which accompany the cutaneous branches 

 of the spinal nerves through the Sa<-rti* />/>i/p?iattr>tx cranio-darsali*. 



