Description and Demonstration of the Superficial and Deep Perineal Pouches

Anatomical Boundaries of the Superficial Perineal Pouch

The perineal region is divided into two distinct anatomical spaces: the superficial and deep perineal pouches. These pouches are essential structures in urogenital anatomy, containing various muscles, nerves, and blood vessels.

Boundaries of the Superficial Perineal Pouch

• Superior Boundary: Perineal membrane
• Inferior Boundary: Superficial perineal fascia (Colles’ fascia)
• Lateral Boundary: Ischiopubic rami
• Posterior Boundary: Superficial perineal fascia extending to the posterior margin of the perineal membrane

Contents of the Superficial Perineal Pouch

The superficial perineal pouch contains several key anatomical structures:

• Bulbospongiosus muscle
• Ischiocavernosus muscle
• Superficial transverse perineal muscle
• Branches of the pudendal nerve
• Perineal blood vessels

The Deep Perineal Pouch

The deep perineal pouch is situated superior to the perineal membrane and contains additional muscular and neurovascular structures.

Boundaries of the Deep Perineal Pouch

• Superior Boundary: Inferior fascia of the urogenital diaphragm
• Inferior Boundary: Perineal membrane
• Lateral Boundary: Ischiopubic rami

Contents of the Deep Perineal Pouch

• Deep transverse perineal muscle
• External urethral sphincter
• Compressor urethrae muscle
• Urethrovaginal sphincter (in females)
• Branches of the internal pudendal artery

Clinical Relevance

Understanding the anatomy of the perineal pouches is crucial for medical professionals, especially in cases involving perineal trauma, urogenital surgery, and pelvic floor disorders.