Male and female perineum, inferior views. E. Muscles of superficial perineal compartment.

Transverse (axial) MRIs of the female pelvis and perineum. E.

Layers of the lower anterior abdominal wall.

Coronal MRIs (magnetic resonance images) of the male pelvis and perineum. A. Insert image indicates level of MRI.

Transverse (axial) MRIs of the male pelvis and perineum. B. Insert image indicates level of MRI.

Three lateral images of male head and neck featuring skull and neck muscles as head is held stationary (top), bent to the back (middle), and to the front (bottom).

Three anterior images of male head and neck featuring skull and neck muscles as head is held stationary (top), bent to its right (middle), and to its left (bottom).

Transverse (axial) MRIs of the male pelvis and perineum. C.

Floor of male pelvis, superior view.

Male pelvis, coronal sections through pelvis anterior to rectum. A. Dissection, view of anterior portion from behind.

Ischioanal fossa and related structures (male cadaver in prone position).

Male. A. External urethral sphincter, compressor urethrae and urethrovaginal sphincter. The sphincter urethrae is more tubeline. In the male, part of the muscle encircles the intermediate (membranous) part of the urethra, and part extends to the base of

Muscles of male perineum