Question

The vein which is formed from the capillaries of an organ and terminates into capillaries in some other organ before entering the heart is called as
A) Pulmonary vein
B) Coronary vein
C) Portal vein
D) Systemic vein

Answer 1

Hint:They are also known as hepatic veins that transfer the blood from the gastrointestinal tract and spleen to the liver. It supplies 75% of blood flow to the liver of the human body.

Complete answer:
A portal vein is a vein which helps in collecting blood from one organ by a set of capillaries and distributes that blood into the other organ through another set of capillaries instead of sending the blood into the heart. Portal veins begin in the capillary beds of one organ and terminate in the capillary bed of another organ. This is because the latex does not move through capillary beds, portal veins must be injected separately.

Additional information: Pulmonary veins are the veins which transfer the oxygenated blood from lungs to heart. The largest pulmonary veins are the four main pulmonary veins, two from each lung that drains into the left atrium of the heart. The coronary vein joined together to form a large vessel that collects blood from heart muscle. It delivers less oxygenated blood to the right atrium. Systemic veins are the veins that drain into the right atrium without passing through the two vascular beds.

Thus, the correct answer is option C. i.e., portal vein.

Note:In most of the people, portal veins divided into right and left veins before entering the liver. The right veins now branch off into the anterior and superior veins. It brings nutrient-rich blood to the liver.