Anatomy of upper gi

2. OESOPHAGUS
Narrow muscular tube
Extent – lower border of cricoid cartilage to cardiac
end of stomach
25cm
Flattened AntPostly
Pharyngo-oesophageal jn

5. Curvatures
Generally vertical
2 side to side curvatures(to left)
AP curvatures correspond to that of cervicothoracic
spine

6. Constrictions
At beginning (15cm)
Crossed by aortic arch(22.5cm)
Left bonchus(27.5cm)
On piercing diaphragm(37.5cm)

8. BLOOD SUPPLY
Inf thyroid arteries ---------------
Eosophageal branches
of aorta-----------------------------
Oesophageal branches of
Left gastric artery
----------------------

9. CONTD…
VENOUS
• upper- brachiocephalic
 middle- azygos
 lower- left gastic
LYMPHATIC
 cervical  deep cervical
 Thoracic  post mediastinal
 Abdominal  left gastric

10. Nerve supply
Parasymp
upper half - recurrent laryngeal
lower half -oesophageal plexus by 2 vagi
•Symp
upper – middle cervical ganglion
lower – upper 4 thoracic ganglia

11. STOMACH
Muscular bag that forms the widest & most
distensible part of digestive tube
Oesophagus to duodenum
Location – epigastric,
umbilical & left
hypochondriac
•25cm long
•Capacity – 1.5 to 2L
•Parts

12. CONTD…
•Lesser curvature- Concave,
right border,Lesser omentum
•Greater curvature-Convex,
left border,greater omentum,
gastrosplenic&
gastrophrenic ligament
•2 surfaces

13. RELATIONS

14. ARTERIAL SUPPLY
Venous drainage – portal, superior
mesenteric & splenic

15. CONTD…
Left gastric, panc-
splenic
coeliac&
hepatic
rt gastroepi

pyloric

16. Nerve supply
Symp – T6 to T10
Parasymp – from vagi through oesophageal plexus &
gastric nerves