ANTERIOR ASPECT OF HEAD AND NECK. 



sphenoid; outer side, of cartilaginous Eustachian tube. In- 

 sertion (by a tendon hooking round the hamular process); 

 posterior border of hard palate and aponeurosis of soft palate 

 beneath the preceding. [419] 



Lateral and Prevertebral Muscles of Neck. 



Scalenus Anticus. Origin; anterior tubercles of transverse 

 processes of third, fourth, fifth, and sixth cervical vertebrae. 

 Insertion; scalene tubercle and ridge on first rib. [419] 



Scalenus Medius. Origin; posterior tubercles of trans- 

 verse processes of second to sixth cervical vertebrae. Inser- 

 tion; first rib. [420] 



Scalenus Posticus. Origin; posterior tubercles of fourth, 

 fifth, and sixth cervical transverse processes. Insertion; outer 

 side of second rib. [420] 



Rectus Capitis Anticus Major. Origin; anterior tuber- 

 cles of transverse processes of third, fourth, fifth, and sixth 

 cervical vertebrae. Insertion; basilar process of occipital, 

 antero-external to pharyngeal spine. [420] 



Rectus Capitis Anticus Minor. Origin; anterior arch of 

 atlas. Insertion; basilar process. [421] 



Longus Colli. Vertical portion: Origin; bodies of first 

 three thoracic and last three cervical vertebrae: Insertion; 

 bodies of second, third, and fourth cervical vertebrae. Lower 

 oblique portion: Origin; bodies of first three thoracic verte- 

 bras : Insertion ; anterior tubercles of fifth and sixth cervical 

 vertebrae. Upper oblique portion: Origin; anterior tubercles 

 of transverse processes of third, fourth, and fifth cervical ver- 

 tebras: Insertion; anterior tubercle of atlas. [421] 



Rectus Capitis Lateralis. Origin; transverse process of 

 atlas. Insertion; under surface of ex-occipital bone. [422] 



Triangles of Neck. The Sterno-mastoid divides each side 

 of the neck into two triangles, anterior and posterior. The pos- 

 terior belly of the Omo-hyoid subdivides the posterior tri- 

 angle into two triangles, the occipital above and the clavicular 

 5 [65] 



