An Anatomical Analysis of the Relationships between the Intercostal Nerves and the Thoracic and Abdominal Muscles in Man. II. Detailed Analysis of Innervation of the Three Lateral Abdominal Muscles

Minute dissection was performed in one male adult cadaver in order to elucidate the detailed distribution of muscular branches of intercostal nerves within the lateral abdominal muscles as well as the segmental relationships. In the obliquus internus and transversus abdominis, as well as in the upper half of the obliquus externus, each muscle fascicle receives the nerve of the corresponding segmental attachment to the rib. On the other hand, in...