Anterior view of coverings of spermatic cord and testis. Aponeurosis of external oblique muscle incised and reflected, revealing deeper internal oblique muscle Window in internal oblique muscle exposes deeper transversus abdominis muscle.

Anal sphincters and anal canal. A. Internal surface.

Superficial muscles of the back.

Anterior view of the right lower abdominal muscles. The external oblique muscle has been partially resected to reveal the internal oblique and aponeurosis. The conjoint tendon is shown formed by the arching fibers of the internal oblique and the transve

Posterolateral view of the posterior wall. External oblique muscle is incised and turned laterally, and the internal oblique muscle is incised and turned medially exposing the subcostal (T12) and iliohypogastric nerve (L1). Square in insert indicates or

Fascia lata with saphenous opening, femoral sheath and superficial inguinal nodes.

Schematic of horizontal section of inguinal canal and testis. Drawing shows eight layers of abdominal wall and three evaginations: scrotum, coverings of spermatic cord, and constituents of the cord.

Conjoint tendon and fascia transversalis.

Anterolateral view of a superficial dissection of the male pectoral region.

Anterior view of the abdominal region illustrating the internal (right) and external (left) abdominal oblique muscles and their bony attachments.

Intercostal spaces and related structures; intercostal space on coronal section.

Anterior view of surface anatomy of anterior abdominal wall.

External oblique muscle