Answer:
C- Hepatic portal vein
Explanation:
The hepatic portal vein is a vessel that moves blood from the spleen and gastrointestinal tract to the liver.
The portal vein supplies approximately 75 percent of blood flow to the liver. It's not a true vein, which means it doesn't drain into the heart. Instead, it brings nutrient-rich blood to the liver from the gastrointestinal tract and spleen. Then the liver can process the nutrients from the blood and filter out any toxic substances it contains before the blood goes back into general circulation.
The answer is internal and external factor
Answer:
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