THE ABDOMINAL MUSCLES 



247 



Blood-supply. — Intercostal and lumbar arteries. 

 Nerve-supply. — Intercostal and lumbar nerves. 



2 ^ 



t 6 



O OS 



s s 



a, c 



t- o ^ .2 





tf -3 





a cs 



'=- a 



O CP (L> 



2. Obliquus abdominis intemus (small oblique; internal oblique of the 

 abdomen). — -This muscle is situated under the preceding one. Its fibers are 

 directed downward, forward, and inward. It forms a triangular curved sheet with 

 the base behind. 



