84 ANATOMY OF THE DOMESTIC FOWL 



zygapophyses and have slips extending forward which slips are in- 

 serted to the neural spines of the alternate vertebrae. The sixth 

 fasciculus originates from the transverse process of the sixth ver- 

 tebra, passing obliquely up the neck is inserted to the extremity of 

 the diapophysis of the fourth vertebra, the outer extremity of the 

 transverse process of the third vertebra. The seventh, or anterior, 

 fasciculus originates from the transverse process of the fifth vertebra, 

 and is inserted to the extremity of the diapophysis of the third 

 vertebra. 



Shape. Short, thick fasciculi. 



Relations. Laterally with the vertebras. Inferiorly with the 

 intertransversales. Superiorly with the longus colli posticus, and 

 externally with the skin. 



Action. Flexes one vertebra on the other laterally. 



Longus Colli Anterior (Fig. 19, No. 13). (Synonym. Longus 

 colli ventralis.) 



Location. Occupies the anterior portion of the neck. 



Origin and Insertion. This muscle is divided into a vertical 

 portion, and a superior and an inferior oblique portion. The ver- 

 tical portion originates from the hypophyses of the tenth to the fif- 

 teenth vertebra and is inserted by a tendon to the tubercle on the 

 inferior portion of the atlas. Small, slender tendons are given off 

 and insert to the apices of the parapophyses of the fourth to the 

 tenth cervical vertebrae. There is more or less attachment to 

 the bodies of the cervical vertebrae mentioned. The superior 

 oblique portion originates from the diapophyses of the third, the 

 fourth, the fifth cervical vertebrae and becoming tendinous is in- 

 serted to the tubercle on the inferior portion of the body of the atlas. 

 The inferior oblique portion originates from the transverse processes 

 of the fourth, the fifth, and the sixth cervical vertebrae. It is 

 inserted by a slender tendon to the apex of the parapophysis of 

 the third cervical vertebra. 



Shape. A long fleshy muscle extending the entire length of the neck. 



Relations. Inferiorly with the skin and superiorly with the cer- 

 vical vertebrae. 



Action. Pulls the neck downward. 



Rectus Capitis Lateralis (Fig. 19, No. 17). Location. -The 

 infero-lateral anterior portion of the neck. 



Origin. Originates tendinous from the diapophysis of the third, 

 the fourth, and the fifth cervical vertebrae. 



