Cervical oesophagus corresponds to
C3 C4 C5
C2 C3
C5 C6 C7
C7 C8
Cervical esophagus stas at inferior margin of cricoid cailage that corresponds to corpus of 6th cervical veebra. This level is marked by a carotid tubercula named "Chasseing tubercula," which is an impoant landmark in cervical esophagectomy. Cervical esophagus ends at inferior edge of first dorsal veebra that comes up to a horizontal plane of jugular incisura of sternum. The endpoint is the staing point of upper mediastinum, and from this point it is thoracic esophagus. Cervical esophagus is 5-6 cm long, and its luminal diameter is 1.4-1.5 cm at its narrowest point. Ref -<a href="
Thorax