BodyWall
4
Plate254
ThoracoabdominalNerves
Spinal nerve trunk
Meningeal branch
Spinal sensory
(dorsal root) ganglion
Posterior (dorsal) root
Anterior (ventral)
root
Erector spinae muscle
Medial branch,
Lateral branch of
Posterior (dorsal)
ramus
Anterior (ventral) ramus of spinal nerve (intercostal nerve)
Collateral branch
External intercostal muscle
Internal intercostal muscle
Innermost intercostal muscle
Latissimus dorsi
muscle
Subcostal
muscles
Serratus
anterior
muscle
Lateral
cutaneous
branch
Innermost
intercostal
muscle
Internal
intercostal
muscle
External intercostal
muscle
External intercostal
membrane
External
oblique muscle
Anterior cutaneous
branch
Greater and lesser
splanchnic nerves
Sympathetic trunk
Gray and white rami communicantes
Rectus abdominis muscle
Linea alba
Window cut
in innermost
intercostal muscle
Communicating
branch
Internal intercostal
membranes anterior to
external intercostal
muscles
Internal
intercostal
muscle
Collateral branch
rejoining intercostal nerve
Transversus abdominis muscle
