Esophagus

Question 1

Length of esophagus

Answer 1

10 inches

25 cm

Question 2

What level does it pass through the diaphragm

Answer 2

T10

Question 3

Esophageal strictures

Answer 3

1. upper/pharynoesophageal - caused by cricopharyngeus muscle
2. middle/thoracic - caused by aortic arch and left main bronchus
3. inferior/diaphragmatic - caused by esophagial hiatus

Question 4

Relation of esophagus to abdomen

Answer 4

Anterior: posterior surface of left lobe of liver
Posterior: left crus of diaphragm

Question 5

What accompanies the esophagus in the diaphragm

Answer 5

Vagus nerve (LARP)

Question 6

Anatomic Divisions of Esophagus

Answer 6

1. cervical - 18 cm from incisors
2. thoracic -18 to 23 cm (tracheal bifurcation); 24 to 32 (gastroesophageal junction)
3. abdominal - 32 to 40 cm

Question 7

Arterial supply of esophagus

Answer 7

1. upper third - inferior thyroid artery from subclavian artery
2. middle third - descending thoracic aorta
3. lower third - left gastric artery from celiac trunk

Question 8

Venous drainage of esophagus

Answer 8

1. upper third - inferior thyroid vein
2. middle third - azygous vein
3. lower third - left gastric vein

Question 9

Lymph drainage of esophagus

Answer 9

1. upper - deep cervical
   middle - mediastinal
   lower - celiac