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AAAC02 21/5/05 10:38 AM Page 8
2 The thoracic wall II

Vein
Artery Intercostal
Nerve
External
Internal Intercostal muscles
Innermost

Posterior ramus Posterior
intercostal
artery
Fig.2.1 Spinal
Intercostal
An intercostal space Collateral branch nerve branch
(to muscles)
Aorta
Pleural and
lateral
peritoneal Lateral branch
sensory
branches
Internal
Cutaneous thoracic artery
branches

Fig.2.2 anterior Anterior
The vessels and nerves intercostal
of an intercostal space artery

Xiphisternum

Costal margin
Vertebral
levels
Central tendon
T8
Inferior vena cava

T10 Oesophagus

Aorta
T12 Lateral arcuate ligament
Medial arcuate ligament
Right crus
Psoas major
Quadratus lumborum
Fig.2.3
The diaphragm Third lumbar vertebra

8 Thorax