Manubriumof sternumEsophagusCommon carotid arteryInternal jugular veinRib ISuperior thoracicapertureApex of right lungSubclavianarteryand veinTracheaVertebra TIRib IITracheaPleauralcavity (lung)VeinsNervesArteriesEsophagus
Fig. 3.4 A. Inferior thoracic aperture. B. Diaphragm.