ANTERIOR ASPECT OF HEAD AND NECK. 



lower part of the thyroid; and inferior terminal, to the lower 

 and inner part of the thyroid. [823] 



The transverse cervical crosses over the Scalenus anticus to 

 the anterior border of the Trapezius, giving off muscular 

 branches. It then divides into the superficial cervical, which 

 ascends upon the Splenius ; and the posterior scapular, which 

 descends along the posterior border of the scapula. [823] 



The suprascapular crosses the Scalenus anticus, subcla- 

 vian artery, brachial plexus, and suprascapular ligament, ac- 

 companying the suprascapular nerve. Its branches are: mus- 

 cular; medullary, to the clavicle; acromial, to that region; 

 articular, to the shoulder and acromio-clavicular joints; sub- 

 scapular, to the subscapular fossa; supraspinous, to the supra- 

 spinous fossa; suprasternal, to the sterno-clavicular joint; and 

 terminal, through the great scapular notch under the spino- 

 glenoid ligament to the infraspinous fossa. [825] 



Superior Intercostal. The profunda cervicis arises at the 

 upper border of the neck of the first rib and ascends between 

 the Complexus and Semispinalis colli. [826] 



VEINS. 



The vena comites usually have the same course and branches 

 as their arteries. But the vertebral veins correspond only to the 

 extracranial part of the artery, receive the anterior and pos- 

 terior deep cervical, and end in the innominate; while the in- 

 ferior thyroid veins drain the thyroid body and descend in front 

 of the trachea to the innominate. [875] 



The internal jugular is a continuation of the lateral sinus. 

 Beginning in the jugular foramen it descends in the carotid 

 sheath external to the artery, and joins the subclavian behind 

 the first costal cartilage, forming the innominate. Its tribu- 

 taries are the inferior petrosal sinus and the pharyngeal, com- 

 mon facial, lingual, ranine, superior and middle thyroid, and 

 occipital veins. [875] 



The facial begins as the angular vein at the inner angle of 



[83] 



