Introduction: Abdominal aorta and its major branches supply oxygenated blood to all the organs in abdominal cavity and lower limbs. Ventral branches of abdominal aorta supply the gastrointestinal tract. Anatomical knowledge of the abdominal aorta and its branches is important not only to determines flow dynamics but also crucial in understanding pathogenesis of vascular diseases. Aim: To measure the External diameters of ventral branches of abdominal aorta (coeliac trunk, superior mesenteric artery and inferior mesenteric artery) at
it’s origin Material and Method: The study was carried out on 60 adult cadavers over a period of 2 years. Measurement of external diameters of ventral branches of abdominal aorta was taken with the help
of digital vernier calliper. Result: The mean external diameter of coeliac
trunk, SMA, IMA at its origin is 0.64 ± 0.08 cm, 0.77 ± 0.07 cm, 0.37 ± 0.06 cm respectively. Conclusion: The knowledge of normal arterial
diameters in a specific population is of great importance in order to make correct and precise radiological diagnosis of arterial aneurysms.