60 EQUINE ANATOMY. 



Action. Depresses hyoid and larynx. 

 Nerve. First cervical. 



STERNO-THYROID. 



Origin. As preceding. 



Insertion. Posterior border of thyroid cartilage. 



Action. As preceding. 



Nerve. First cervical. 



FIG. 6. 



LATERAL VIEW OF THE NECK; MIDDLE LAYER OF MUSCLES. 



Funicular portion of the cervical ligament; 2, Complexus major; 3, Complexus 

 minor; 4, Rectus capitis posticus major; 5, Rectus capitis posticus minor; 6, 

 Stylo-maxillaris; 7, Carotid artery; 8, Pneumogastric nerve and branch of sym- 

 pathetic; 9, Lpngus colli; 10, Recurrent nerve; n, Inferior scalenus; 12, Spinalis, 

 or transversalis colli; 13, Incision through rhomboideus and trapezius; 14, Trachea. 



OMO-HYOID. 



Origin. Inner surface of sub-scapularis. 



Insertion. Body of hyoid bone with sterno-hyoid (separates 

 carotid artery from^jugularVvein in upper half of neck). 

 Action. Depresses^hyoid. 



Nerve. First cervical. 



