Question

Normally a vien opens into a large or into the heart but doesn’t end in capillaries. Which one or more viens in humans is/are exceptions to this law?

Answer 1

hello friend...
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There are some veins which neither ends in capillaries nor open into heart. Such type of veins are known as portal vein.
these veins are arises from one organ and opens into other organ.

Hepatic portal vein is a very good example of portal vein as it carries blood from gastrointestinal tract, gallbladder, pancreas and spleen to the liver.
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hope it will help you...
best of luck...