THE ABDOMINAL MUSCLES 



247 



Blood-supply. — Intercostal and lumbar arteries. 

 Nerve-supply. — Intercostal and lumbar nerves. 



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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. 



