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Medical Definition of epigastric artery
: any of the three arteries supplying the anterior walls of the abdomen:
a : one that is a direct downward continuation of the internal mammary artery
— called also superior epigastric artery
b : one that arises from the external iliac artery near the inguinal ligament and ascends along the inner margin of the internal abdominal ring
— called also deep epigastric artery, inferior epigastric artery
c : one that arises from the femoral artery, passes through the saphenous opening in the fascia lata, and then ascends upon the lower part of the abdomen
— called also superficial epigastric artery
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