Oesophagus Flashcards
Oesophagus goes through the diaphragm at which vertebral level
10
Oesophagus deviates from midline to left and returns to midline at … then deviates back to left at …. before it enters abdominal cavity
T5
T7
Oesophagus enters which side of the stomach
Right side
Anteroposterior curves follow …
Cervicothoracic cirvatures of the vertebral column
Relations in the neck?
Anteriorly, trachea and rln
Posteriorly, vertebral column
Laterally, lobes of the thyroid gland
Anterior relations in thorax
Trachea, left rln, left main bronchus, pericardial sac, left atrium
Posterior relations?
Bodies of thoracic vertebrae,thoracic duct, azygos vein, right posterior intercostal arteries, descending aorta (lower part)
Right relation
Mediastinal pleura, arch of Azygos vein
Left relation
Left subclavian artery, arch of aorta, thoracic duct, mediastinal pleura
Below lung roots relation
Oesophageal plexus, lt vagus anterior, rat vagus posterior
How long is oesophagus in abdominal region
1 to 2.5 cm long
1st oesophageal constriction?
Pharyngoesophagueal junction
15cm from incisor teeth
2nd constriction
Where it is crossed by left main bronchus
22.5 cm from incisor teeth
3rd constriction
Due to left atrium
27.5 from incisor teeth
4th constriction
Oesophageal hiatus, opening into diaphragm
38cm from incisor
Esophagus enters abdominal cavity in which part of the diaphragm
Right crus of diaphragm
Anterior and lateral parts … by posterior surface …
Intraperitoneal and retroperitoneal
Anterior relations in abdomen
Posterior surface of left lobe of liver and left vagus
Posterior relations in abdomen
Left crus of diaphragm and right vagus
Upper sphincter created by which muscle
Cricopharyngeus. Circular started fibers
Upper third of oesophagus supplied by
Inferior thryroid artery
Middle third supplied by
Oesophageal branches of aorta and bronchial artery
Lower third of oesophagus supplied by
Left gastric artery
Upper third drains into
Inferior thyroid veins(empty into brachiocephalic veins)
