Anterior & posterior abdominal wall.

ABDOMINAL WALL

Structure of anterior abdominal wall

• Skin

• Superficial fascia

• Deep fascia

• Muscles

• Extraperitonial fascia

• Parietal peritoneum

Insertion Origin Muscle

linea alba, pubic crest & tubercle, anterior superior iliac spine &

anterior half of iliac crest

lower 8 ribs external abdominal oblique

lower 3 or 4 ribs, linea alba, pubic crest and pecten

lumbar fascia, anterior 2/3 of the iliac crest, lateral 2/3 of the inguinal ligament

internal abdominal oblique

linea alba, pubic crest and pecten lower 6 ribs, thoracolumbar fascia, anterior 3/4 of the iliac crest, lateral 1/3 of inguinal

ligament

transversus abdominis

xiphoid process of the sternum and costal cartilages 5-7

pubic crest and symphysis rectus abdominis

EXTERNAL OBLIQUE MUSCLE

Inguinal ligament & superficial inguinal ring

INTERNAL OBLIQUE MUSCLE

Cremaster muscle

Transversus abdominis muscle

RECTUS ABDOMINIS

Inguinal canal

Spermatic cord

Structure of posterior abdominal wall

• 5 lumbar vertebrae

• 12 rib

• Upper part of bony pelvis

• Psoas muscle

• Quadratus lumborum muscle

• Origin of transversus abdominis muscle

• iliacus

Insertion Origin Muscle

lesser trochanter of the femur bodies and transverse processes of lumbar

vertebrae + T12

psoas

transverse processes of lumbar vertebrae 1-4 and the

12th rib

posterior part of the iliac crest and the iliolumbar ligament

quadratus lumborum

lesser trochanter of the femur iliac fossa and iliac crest iliacus

Psoas & iliacus

quadratus lumborum

Thank you