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AAAC09 21/5/05 10:35 AM Page 24
9 The nerves of the thorax

Fig.9.1 C3 Scalenus anterior
The course and distribution C4
of the right phrenic nerve C5

Subclavian vein

Mediastinal pleura
Branches to fibrous
Sensory to
diaphragmatic pleura and parietal pericardium
Motor to diaphragm Inferior vena cava
Central tendon
of diaphragm
Sensory to
diaphragmatic peritoneum
Left common Subclavian artery
carotid artery
Thoracic duct on side of oesophagus
Subclavian vein
Superior intercostal vein
Vagus nerve Arch of aorta Fig.9.2
Ligamentum Left recurrent laryngeal nerve The structures on the left
arteriosum Left pulmonary artery side of the mediastinum.
Pulmonary trunk They are all covered with
Posterior pulmonary plexus the mediastinal pleura
Left auricle
Sympathetic trunk
Phrenic nerve Descending aorta
Left ventricle Greater splanchnic nerve

Oesophageal
plexus on oesophagus

Subclavian artery

Oesophagus Subclavian vein

Trachea Left brachiocephalic
Vagus nerve vein
Superior vena cava
Pulmonary artery
Fig.9.3 Acending aorta
The structures on the right Intercostal vessels Bronchus
side of the mediastinum and nerves Right atrium
Pulmonary veins
Posterior
pulmonary plexus Hilum of lung
Phrenic nerve
Greater
splanchnic nerve
Oesophageal plexus
on oesophagus

24 Thorax