<prompt> Regarding oesophagoscope true areIncisor acts as fulcrumCompresses posterior tongueLifts epiglottisTip is in pyriform fossa  <response>: oesophagoscopy is of 3 types mainly, that is 1rigid 2flexible 3transnasal it is performed under general anaesthesia with orotracheal intubation with a tube in the left corner of the mouth.The patient lies supine, the head is elevated by 10 -15 cm, neck flexed on the chest and head extended at the atlantooccipital joint.The purpose of this position is to attain the axis of mouth, pharynx, oesophagus, in a straight line to pass the tube easily.This position can be achieved with the help of special headrest.four basic steps include, 1identification of arytenoids 2passing the cricopharyngeal sphincter 3crossing the aoic arch and left bronchus 4passing the cardia ref: diseases of ear, nose and throat, PL Dhingra,6 th ed, pg no 427 