Phrenic nerve
From C3-C5 which is anterior to the heart
Vagus nerve
Posterior to the heart
Aortic arch
Left vagus nerve wrapped around
Serratus anterior
Fan shaped muscle on the first 8-9 ribs
Caval hiatus
IVC in T8
Oesophageal hiatus
Oesophagus and vagus nerve (which splits into anterior and posterior vagal trunks) in T10
Aortic hiatus
Aorta, azygous vein and thoracic duct in T12
Internal intercostal
Away from manubrium
External intercostal
Towards manubrium