Anterior view of the abdominal region illustrating the transversus abdominis muscle and its bony attachments. Both sides of muscle are shown.

Lateral view of the abdominal region illustrating the transversus abdominis muscle and its bony attachments. Both sides of muscle are shown.

Anterior view of abdominal cavity, skin and musles of anterior abdominal wall cut away to reveal contents undisturbed. Wall section cut from this illustration shown in 2. 18B.

Posterior rectus sheath and inguinal canal. External oblique and its aponeurosis cut away to reveal the iliohypogastric and ilioinguinal nerves. Spermatic cord pulled medially to reveal genital branch of genitofemoral nerve.

Posterior view of the abdominal region illustrating the transversus abdominis muscle and its bony attachments. Both sides of muscle are shown.

Sagittal MRIs (magnetic resonance image) of female pelvis.

Anterior view of the thigh showing the rectus femoris muscle and its skeletal attachments.

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.

Anterior view of the hip and lower back region illustrating the quadratus lumborum muscle and its bony attachments.

Transverse or horizontal (axial) MRI of the abdomen at the level of the lower L1. Image at bottom illustrates level of scan (line D).

Anterior view of surface anatomy of anterior abdominal wall.

Bones of lower limb showing muscle attachments. B. Posterior view.

Rectus abdominis muscle