Esophagus

Question 1

Length of Abdominal Esophagus is

Answer 1

1-25cm

Question 2

Esophageal opening is at the level of

Answer 2

T10

Question 3

Constrictions of esophagus

Answer 3

6inch- Pharynx joins upper end of esophagus
10inch- aortic arch
16inch-diaphragmatic opening

Question 4

Blood supply of esophagus

Answer 4

Left gastric artery via celiac trunk

drains to Left gastric vein > portal vein > inf vena cava

Question 5

Nerve supply

Answer 5

Esophageal plexus via vagal trunk

Question 6

Epithelium of Esophagus

Answer 6

Stratified squamous non keritanized

Question 7

Layers of esophagus

Answer 7

1. Mucosa- SS non keratinized epithelium and lamina propria with lose CT
2. Muscularis Mucosae- inner circular, outer longitudinal muscle
3. Submucosa- Cardiac glands (branched tubuloacinar) amd meissners plexus
4. Muscularis Externa- Upper stratified, middle mixed and lower smooth muscle layer
5. Serosa- CT, capillaries and mesothelium

Question 8

Rete apparatus

Answer 8

interdigitation of CT and epithelium

Question 9

Langerhan cells

Answer 9

Antigen presenting

Question 10

MALT

Answer 10

mucosa associated lymphoid tissue

Question 11

Whats the most common site of esophageal carcinoma

Answer 11

Lower end