Question

Blood vessel containing highest concentration of amino acids and glucose

Answer 1

Hepatic portal vein would contain the highest concentration of amino acids and glucose soon after a meal.

Answer 2

During digestion of a meal, nutrients (including dietary sugars) are primarily absorbed by epithelium of the small intestine. The tissue transfers these nutrients immediately to the venous circulation (mesententeric veins) that drains blood from the small bowel. These veins then drain into the portal vein which brings the nutrients to the liver for first pass processing.

The mesenteric veins and the hepatic portal vein comprise the hepatic venous portal system. It is these vessels that have the greatest blood glucose levels shortly following a meal until that sugar is diffused throughout systemic circulation post-hepatically.