OESOPHAGUSNarrow muscular tube Extent – lower border of cricoid cartilage to

cardiac end of stomach25cmFlattened AntPostlyPharyngo-oesophageal jn

CurvaturesGenerally vertical2 side to side curvatures(to left)AP curvatures correspond to that of

cervicothoracic spine

ConstrictionsAt beginning (15cm)Crossed by aortic arch(22.5cm)Left bonchus(27.5cm)On piercing diaphragm(37.5cm)

BLOOD SUPPLYInf thyroid arteries ---------------

Eosophageal branches of aorta-----------------------------

Oesophageal branches of Left gastric artery ----------------------

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

Nerve supplyParasymp upper half - recurrent laryngeal lower half -oesophageal plexus by 2

vagi• Symp upper – middle cervical ganglion lower – upper 4 thoracic ganglia

STOMACHMuscular bag that forms the widest & most

distensible part of digestive tubeOesophagus to duodenumLocation – epigastric, umbilical & left hypochondriac• 25cm long• Capacity – 1.5 to 2L• Parts

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

RELATIONS

ARTERIAL SUPPLY

Venous drainage – portal, superior mesenteric & splenic

CONTD…Left gastric,

panc-spleniccoeliac&hepatic

rt gastroepi

pyloric

Nerve supplySymp – T6 to T10Parasymp – from vagi through oesophageal

plexus & gastric nerves