The hepatic portal vein is characterized by
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Correct Answer: Option A
Explanation:
The hepatic portal vein is unique in that it connects two sets of capillaries: it begins with capillaries in the intestinal and spleen areas, and it ends with capillaries in the liver. This allows the blood to carry nutrients, toxins, and other substances from the digestive tract directly to the liver for processing.
Here’s why the other options are incorrect:
B. Connecting the liver and the kidney – The hepatic portal vein connects the digestive organs to the liver, not the liver to the kidney.
C. Carrying deoxygenated blood – While the hepatic portal vein carries blood low in oxygen, its primary role is to transport nutrient-rich blood from the digestive system to the liver, not oxygen.
D. Ending with large capillaries – The hepatic portal vein ends in the liver's capillary network (called sinusoids), which are small capillaries, not large ones.
E. Having no capillaries – This is incorrect because the hepatic portal vein starts and ends with capillaries, forming a capillary-bed-to-capillary-bed system.
The hepatic portal vein is unique in that it connects two sets of capillaries: it begins with capillaries in the intestinal and spleen areas, and it ends with capillaries in the liver. This allows the blood to carry nutrients, toxins, and other substances from the digestive tract directly to the liver for processing.
Here’s why the other options are incorrect:
B. Connecting the liver and the kidney – The hepatic portal vein connects the digestive organs to the liver, not the liver to the kidney.
C. Carrying deoxygenated blood – While the hepatic portal vein carries blood low in oxygen, its primary role is to transport nutrient-rich blood from the digestive system to the liver, not oxygen.
D. Ending with large capillaries – The hepatic portal vein ends in the liver's capillary network (called sinusoids), which are small capillaries, not large ones.
E. Having no capillaries – This is incorrect because the hepatic portal vein starts and ends with capillaries, forming a capillary-bed-to-capillary-bed system.