482 



ANATOMY IN A NUTSHELL 



transverse processes of the cervical vertebra?. When they reach the sixth cer- 

 vical vertebra they form two main trunks, one of which passes through the 

 foramen in the transverse process of the sixth cervical vertebra and the other 

 through thai of the seventh. They now unite into a common trunk which 

 empties into the back pari of the innominate vein. One pair of valves guard 

 its mouth. The radicles of the vertebral vein are (a) muscular, (b) dorsi-spinal, 

 (c) meningo-rachidian, (d) ascending cervical, (e) deep cervical, (f) first inter- 

 costal. 



The deep cervical, also called posterior vertebral, lies between the Com- 

 plcxus and the Semispinalis muscles. It accompanies the profunda cervicis 

 aitery. It empties into the lower end of the vertebral vein. 



PLATE CCLVIII. 



INFUNDIBULUM 



ETHMOIDAL CANALS 



MIDDLE TURBINATED 



uncinate process 

 Lateral View of the Ethmoid. 



LESSON CLVI. 



The axillary vein commences at the lower border of the axillary space and 

 receives radicles corresponding to the branches of the axillary artery. At the 

 outer border of the first rib it continues as the subclavian vein. Below the 

 Lower border of the tendons of the Teres major and Latissimus dorsi it is called 

 basilic It has a pair of valves opposite the lower border of the Subscapularis 

 muscle. At the termination of the cephalic vein and the subscapularis vein. 

 valves arc also found. 



The subclavian vein is a continuation of the axillary vein at the outer 

 border of the first rib to the inner end of the clavicle where it joins the internal 

 jugular vein and makes the innominate vein. The external jugular vein empties 

 into this veil] and the anterior jugular may empty into it. The Scalenus anti- 

 cus muscle and the phrenic nerve separate this vein from the subclavian artery. 

 It has valves about an inch from its termination. 



The right innominate vein, which is about an inch long, is formed behind 

 the inner end of the clavicle by the internal jugular and subclavian veins. It 



