<prompt> All of the following structures pass through the superior aperture of thorax except -Right recurrent laryngeal nerveLeft common carotid arteryLeft sympathetic trunkThoracic duct  <response>: Ans. is a i.e., Right recurrent laryngeal nerve Superior aperture of thorax The narrow upper end of the thorax, which is continuous with the neck is called the superior aperture or the inlet of the thorax.Structures passing through the inlet of thoraxVisceraVesselsNervesMuscles TracheaLarge vessels Right and left Sternohyoid Oesophagus Brachiocephalic artery onphrenic nervessternothyroid and Apices of the lungsright side Right and leftlongus colliwith pleura Left common carotidvagus nerves Remains of theartery and left subclavian Right and left thymusartery on the left side.sympathetic Thoracic ductRight and left brachiocephalic veinsSmaller vesselsRight and left internal thoracic arteriesRight and left superior intercostal arteriesRight and left first posterior intercostal veinsInferior thyroid veinstrunks. Right and left first thoracic nerves as they as 