Question

The hepatic portal vein drains blood to the liver from
A) Intestine
B) Heart
C) Stomach
D) Kidneys

Answer 1

Hint:When the venous blood is collected from some part of the body it is redistributed by capillaries in some other organs instead of being returned directly to the heart. This is called a portal system.

Complete answer:
Let’s analyse each given option to find out the correct option.
>Option A: Hepatic portal veins carry the deoxygenated blood from the gastrointestinal tract, gallbladder, pancreas, and spleen to the liver. It carries the nutrient-rich blood to the liver which is further processed there and returned back to the heart via inferior vena cava. The hepatic portal vein receives blood from capillaries of gastrointestinal organs and the spleen and delivers it to the sinusoids of the liver. This is called the hepatic portal vein. Therefore, this is the correct option.
>Option B: The major blood vessels that are connected to the heart are the aorta, the superior vena cava, the inferior vena cava, the pulmonary artery (carry oxygen-poor blood from the heart to the lungs where it is oxygenated), the pulmonary veins (bring oxygen-rich blood from the lungs to the heart), and the coronary arteries (which supply blood to the heart muscle). Therefore, this is an incorrect option.
>Option C: Lienogastric vein collects blood from the stomach and spleen. Therefore, this is an incorrect option.
>Option D: In the kidney, the blood comes from the abdominal aorta and inferior vena cava, the large arteries, and veins that are part of the ascending aorta. Oxygenated blood is brought to the kidneys from a small branch called the renal artery. Therefore, this is an incorrect option.

Thus, the correct option is (A) Intestine.

Note:It is to be noted that the hepatic portal system is of great significance. It brings the digestion products, such as glucose and amino acids, from the alimentary canal to the liver. The liver retains the excess sugar and converts it into glycogen. This process is glycogenesis.