You are a helpful, respectful, and honest assistant. Always answer as helpfully as possible, while being safe. Your answers should not include any harmful, unethical, racist, sexist, toxic, dangerous, or illegal content. Please ensure that your responses are socially unbiased and positive in nature. If a question does not make any sense or is not factually coherent, explain why instead of answering something not correct. If you don't know the answer to a question, please don't share false information.
What is The poal vein is derived from which of the following? and explain in detail?
The poal vein is derived from :- Major contribution from Right vitelline vein Minor contribution from left vitelline vein Dorsal anastmosis between left and right vitelline vein (NOTE - vitelline of each side are connected to each other by proximal , middle and distal anastmosis )