ABDOMINAL WALL

&

RECTUS SHEATHDR MAAN AL-ABBASI

PHD – MBCHB - MD

Learning Objectives

Describe the anatomy, innervation and functions of

the muscles of the anterior, lateral and posterior

abdominal walls.

Discuss their functional relations their roles in posture,

ventilation and voiding of abdominal/pelvic/thoracic

contents.

THE SKIN

Caput Medusae

Superficial Fascia

Camper (Fatty) – inguinal area

Scarpa (Fibrous) will turn to fascia lata of the

thigh

➢ Colles: Perineum

➢ Dartos: Scrotum and Labia majora

➢ Superficial facia: Penis and Clitoris

Deep Fascia

Muscles

Anterolateral Abdominal Muscles

External Oblique

❑ Inguinal Ligament – Lacunar Ligament

(medial border of femoral hernia)

❑ Superficial Inguinal Ring (Direct and Indirect

Inguinal Hernia)

❑ External Spermatic Fascia

❑ Rectus Sheath (Anterior Layer)

Anterolateral Abdominal Muscles

Internal Oblique

❑ Conjoint Tendon (Falx Inguinalis)

❑ Cremasteric Fascia and Muscle

❑ Rectus Sheath (Median Layer)

Anterolateral Abdominal Muscles

Transversus Abdominus

❑ Conjoint Tendon

❑ Rectus Sheath (Posterior Layer)

Transversalis Fascia

Deep Inguinal Ring (Indirect Inguinal Hernia)

Internal Spermatic Fascia

Rectus Sheath (Posterior Layer)

Femoral Sheath

Rectus Sheath