CHAPTER III 



MUSCLES 



Remove the skin and dissect away the fat and tis- 

 sue covering the muscles. 



A thin layer of muscular fibres covers the neck, 

 thorax, and abdomen, immediately below the 

 skin. The portion upon the neck is known as 

 the platysma myoides. These muscles will be 

 seen as numerous delicate fibres, which remain at- 

 tached to the skin when it is removed. 



MUSCLES OF THE ABDOMEN. 



i. The External Oblique Muscle is a thin, flat mus- 

 cle, arising by digitations from the eight posterior 

 ribs and the lumbar fascia. Its fibres run obliquely 

 backward toward the mid-ventral line, and end in 

 a thin, broad aponeurosis, which unites with its 

 fellow of the opposite side. A mid-ventral white 

 line, the linea alba, indicates the union of the 

 aponeuroses of the muscles of the two sides. The 

 posterior fibres of the muscle are inserted along 

 the brim of the pelvis. A band of delicate fascia, 

 Poitparfs ligament, extends from the symphysis 

 pubis to the anterior part of the ventral margin of 

 the ilium. Between Poupart's ligament and the 



