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ABDOMINAL WALL
&
RECTUS SHEATHDR MAAN AL-ABBASI
PHD – MBCHB - MD
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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.
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THE SKIN
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Caput Medusae
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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
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Muscles
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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)
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Anterolateral Abdominal Muscles
Internal Oblique
❑ Conjoint Tendon (Falx Inguinalis)
❑ Cremasteric Fascia and Muscle
❑ Rectus Sheath (Median Layer)
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Anterolateral Abdominal Muscles
Transversus Abdominus
❑ Conjoint Tendon
❑ Rectus Sheath (Posterior Layer)
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Transversalis Fascia
Deep Inguinal Ring (Indirect Inguinal Hernia)
Internal Spermatic Fascia
Rectus Sheath (Posterior Layer)
Femoral Sheath
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Rectus Sheath
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