74 



ANATOMY OF THE DOMESTIC FOWL 



Action. A tensor of the lateral cervical integument. It is an 

 auxiliary to the tensor patagii. 



Platysma Myoides. Location. The inferior portion of the throat. 



Origin. From the lower margin of the rami of the jaw. Just 

 inferior to the attachment of the masseter. 



FIG. 18. Muscles of the upper neck region, i, Dermo-temporalis. 2, Cornu 

 of the os hyoideum. 3, Carotid artery. 4, Jugular vein. 5, Pneumogastric 

 nerve. 6, Esophagus. 7, Trachea. 



Insertion. From the point of origin it spreads out into a thin 

 fan-like layer and meets its fellow in the median raphe. It is 

 attached to the skin in this region. 



Shape. A very thin fan-shaped muscle. 



Relations. Closely adherent to the skin. 



Action. Assists in supporting the lingual apparatus and superior 

 Jarynx. Compresses and elevates the part. 



