158 



ELEMENTS OF MAMMALIAN ANATOMY. 



lateral sinus at the jugular foramen. The union of these 

 sinuses at this foramen forms the internal jugular vein, 

 which extends deep beneath the muscles of the neck 



r.c 



sb. 



5pm 



A 



sm 



im 



rr - 



sb 



sm 



FIG. 77. A, VENTRAL VIEW OF HEART AND MAIN ARTERIES IN THE TRUNK 

 OF THE RABBIT. 11, ARTERIES OF MAN. 



a, Right auricle; ca, left carotid; c ax, coeliac axis; i n, innominate or 

 brachiocephalic ; il, common iliac; i m, inferior mesenteric ; / r, left 

 renal; r r, right renal; re, right intercostals ; sm, superior mesen- 

 teric; spm, spermatic; sa, sacral; sb, left subclavian. 



with the carotid artery. It joins the external jugular 

 opposite the shoulder-joint. At the base of the skull the 

 internal jugular gives off a large transverse anastomosing 



