Anatomy esophagus

esophagus in neck - arteries?

inferior thyroid arteries

esophagus in neck - veins?

inferior thyroid veins

esophagus in abdomen - lymph drainage?

into left gastric nodes

esophagus in thorax - veins?

• upper 1/3 --> into azygos vein • lower 1/3 --> into left gastric vein (tributary of portal vein)

esophagus in thorax - lymph drainage?

• upper 1/3 --> into superior and posterior mediastinal nodes • lower 1/3 --> nodes along left gastric blood vessels + celiac nodes in abdomen

esophagus in thorax - arteries?

• upper part --> descending thoracic aorta • lower 1/3 --> left gastric artery

esophagus in thorax - nerve supply?

• vagal trunks --> left vagus lies anterior + right vagus lies posterior • esophageal plexus • sympathetic trunks • greater splanchnic nerves

esophagus in thorax - posterior relations ?

• vertebral column • thoracic duct (a.k.a left lymphatic duct) • azygos veins • right posterior intercostal arteries • descending thoracic aorta

esophagus pierce diaphragm - at what level?

T10

esophagus in neck - lymph drainage?

deep cervical LNs

esophagus in abdomen ?

enter abdomen through opening in right crus of diaphragm

esophagus in thorax?

it passes through mediastinum --> enter abdominal cavity (by piercing diaphragm) -->short course (1.25 cm) before entering stomach

esophagus starts at?

level of cricoid cartilage in neck (C6) --> descend in midline behind trachea

esophagus in abdomen - nerve supply?

• anterior and posterior gastric nerves (vagi) • sympathetic branches of thoracic part of sympathetic trunk

esophagus in thorax - left side relations?

• aortic arch • left subclavian artery • thoracic duct • mediastinal pleura

esophagus in abdomen - blood supply?

• arteries --> branches from left gastric artery • veins --> left gastric vein (tributary of portal vein)

Function of esophagus?

• conducts food from pharynx into stomach • wave-like contractions of muscular coat (peristalsis) --> propel food onward

esophagus in abdomen - relations?

• it lies posterior to left lobe of liver + anterior to left crus of diaphragm • on anterior surface --> left vagi • on posterior surface --> right vagi

esophagus in thorax - laterally, right side relations?

• mediastinal pleura • azygos vein

characteristics of esophagus?

• muscular tube , 25cm • extends from pharynx to stomach • 3 parts in neck, thorax and abdomen

esophagus in neck - posterior relations?

• prevertebral muscles • vertebral columns

esophagus in neck - nerve supply?

• recurrent laryngeal nerves • branches from sympathetic trunks

esophagus in neck - lateral relations?

• thyroid glands • carotid sheath --> common carotid artery + internal jugular vein + vagus nerve • on left side --> thoracic duct

esophagus in thorax - anterior relations?

• trachea • left recurrent laryngeal nerve • left bronchus • left atrium of heart

esophagus in neck - anterior relations?

• trachea • recurrent laryngeal nerves