A member asked:

I have small lumps along the veins in my arm. what are they and what are the causes? i am 19 11.8 stone and very active

A doctor has provided 1 answer

One way valves: Veins have valves which prevent blood blackflow and prevents propels bllood back to the right side of the heart when muscles contract. It is a low flow low pressure system but very important and efficient

Answered 8/9/2018

2.8k views

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