6 HEAD AND NECK. 



(ll) POSTERIOR VERTEBRAL REGION 4. 



Sec'tUS Cap'itiS pOSti'CUS ma'jor : spinous process axis inferior 

 occipits.1 curved line. [Occipital.] 



Eoc'tus Cap'itiS JOSti'CUSmi'aor: tubercle posterior arch atlas 

 beneath insertion of above. [Occipital.] 



Owli^'uUS Infe'rior: spinous process axis horizontally to 

 transverse process atlas. [Occipital.] 



Obliil'uus Supe'ri:r : transverse process atlas occipital bone, 

 between curved lines. [Occipital.] 







ARTERIES. 



CABOT1S COMMUinS; arises on right side, from innominate, 

 behind sterno-clavicular articulation ; on left side, from arch 

 of aorta, highest part, and is more deeply placed than th 

 right and passes obliquely outwards to root of neck behind 

 sterno-hyoid and sterno-thyroid muscles, innominate vein 

 and thymus gland. Starting now from each side of neck 

 each pass up and outwards to superior border of thyroid 

 cartilage, there dividing into external and internal carotid. 

 Course indicated by line from sternal end clavicle to point 

 midway between mastoid process and angle of inferior maxilla. 

 Vein lies to outside, pneumogastric nerve on posterior plane 

 between them, the three being enveloped by same sheath of 

 cervical fascia. No branches but terminal. 



CASO'TIS EZTEB'ITA: (8 brs., see above) up between neck of 

 inferior maxilla and external meatus, there dividing into tem- 

 poral and internal maxillary. Crossed by hypoglossal nerve, 

 lingual and facial veins, digastric and stylo-hyoid muscles. 

 Is quite superficial. Thyroide'a Supe'rior I greater cornu hyoid, 

 curving down to thyroid gland anas, with its fellow of oppo- 

 site side and inferior thyroid. Hyoide'a, runs along inferior 

 border of bone, anas, with opposite fellow. Descen'dens su- 

 ferficia'tis, down- and outwards across sheath common carotid 

 supplying sterno-mastoid and adjacent muscles and integu- 

 ment. Larynge'a sufic'rior pierces thyro-hyoid membrane sup- 

 plying muscles, mucous membrane glands, etc., of larynx and 

 epiglottis; anas, with opposite fellow. Cr? co-thyroide 1 a , trans- 

 versely across crico-thyroid membrane, anas, with opposite 

 fellow. Lifigualis I up- and inwards to under surface of tongue 

 (ranine); runs parallel with hypoglossal nerve. Hyoide'a, 

 along superior border bone, supplying muscles, anas, with 

 Opposite fellow. Dorsa'lls lin'guce, ascends to dorsum tongue 

 anas, with opposite fellow, supplying mucous membrane, 

 tonsil, epiglottis, soft palate, etc. Sublingua'lis runs for- and 



