Length of esophagus is ?
Ans. is 'c' i.e., 25 cm Oesophagus 25cm longAerial supply:Cervical pa - Inferior thyroid aeryThoracic pa - Oesophageal branches of aoaAbdominal pa - Left gastric aeryVenous drainage:Cervical pa - Brachiocephalic veinsThoracic pa - Azygous veinsAbdominal pa - Left gastric veinLymphatic drainage:Cervical pa - Deep cervical nodesThoracic pa - Posterior mediastinal nodesAbdominal pa - Left gastric nodesNerve supply:Parasympathetic - Upper 1/2 - Recurrent laryngeal nerves Lower 1/2 - Oesophageal plexus (vagus)Sympathetic - Upper 1/2 - Fibres from middle cervical ganglion Lower 1/2 - Fibres from upper 4 thoracic ganglia Oesophagus shows 4 constrictions,At its beginning, 15cm from incisorsAoic arch - 22.5cm from incisorsLeft bronchus - 27.5cm from incisorsDiaphragm - 37.5cm from incisorsLower esophageal splincter is at diaphragmatic constriction.Oesophagus pierces the diaphragm at TIO level. Ends by opening into the bstomach at T11 level.
10 cm
15 cm
25 cm
40 cm