MUSCULAR SYSTEM. 103 



around this process, it becomes ultimately fixed to the postero- 

 lateral part of the soft palate. 



Direction. — From behind, forwards. 



Jielatio7is. — \ uwardly , with the stylo-pharyngeus and palato- 

 pharyngeus ; outwardly, with the pterygoideus internus. 



Stnictitre. — Fleshy, in the middle ; aponeurotic, externally : 

 terminating, anteriorly, in a long, flat, slender tendon, which 

 plays within a cartilaginous pulley. 



Action. — To stretch or dilate the palate. 



ciRcuMFLExus PALATi. — Staphyhus. 



Situation. — Infolded within the velum palati. 



Form, — Collected into fasciculi, posteriorly: broad, thin, and 

 expanded, anteriorly. 



Attachment. — Anteriorly, to the semi-oval border formed by 

 the union of the palate bones; posteriorly, to the palate; within 

 the substance of which its fibres are intermingled with those of 

 the stylo-pharyngeus and tensor palati. 



Structure. — Fleshy, posteriorly ; aponeurotic, anteriorly. A 

 single muscle. 



III.— MUSCLES OF THE TRUNK. 



The trunk comprises the neck, the thorax, and the abdomen. 



a.— MUSCLES OF THE NECK. 

 1.— HUMERO-CERVICAL REGION. 



"RHOMBOiDEUS LONG US. — Cervico-ocromialis. 



Situation. — Supero-lateral part of the neck. 



Form. — That of an elongated flattened pyramid, having its 

 apex turned forwards. 



Attachment. — Superiorly and anteriorly, to the entire length 

 of the side of the ligamentum colli, reaching as far forward as the 

 second cervical vertebra : posteriorly and inferiorly, to the supe- 

 rior costa and cartilage of the scapula. 



Relations. — Externally, with the panniculus ; internally, with 

 the ligamentum colli ; inferiorly, with the splenius ; posteriorly, 

 it passes under the anterior angle of the scapula, uniting its fibres 

 with those of the rhomboideus brevis. 



D/rec^iW.— Longitudinal ; following the curve of the neck. 



Structure. — Anterior end tendinous : remainder, fleshy. 



Action. — To assist in raising the scapula, and at the same 

 time to draw the bone forwards. 



