Question

Why should the blood going away from stomach and intestines pass through liver and not directly to heart

Answer 1

Because the blood passing from intestines and stomach contain simple sugars and amino acids.So first in the liver amino acids must be first broken down to glucose and urea and then blood containing these simple sugars is sent to heart via the post caval vein and urea is sent out of the body.therefore blood passes to liver via hepatic portal vein and then to heart

Answer 2

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• The liver regulates most chemical levels in the blood and excretes a product called bile. This helps carry away waste products from the liver. All of the blood leaving the stomach and intestines passes through the liver. The liver processes this blood.