When they draw blood, how does the vein not stay punctured after the needle is taken out

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They just shoved a spiky needle in your vein, how come the blood still stays inside your veins after the needle is taken out, is there no hole in the middle of your vein?

In: Biology

4 Answers

Anonymous 0 Comments

I hope my input is within the subject range but, coming from having mutiple blood tests done, some nurses aren’t really careful (due to racism against the minority) and some miss their shot and can tear the tissue, this can cause the senstive tissue to break often and bruise easily in the future.

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