down the center of you're tongue, there is a major artery that splits into hundreds of capillaries. The needle going through a capillary is not going to hurt anything, but if the piercing goes too far back on your tongue you can split the artery open, causing blood to spill out rather than feed the cells in the end of your tongue. Let a professional do it.
lingual vein
No, you can not see the third vein in your tongue. But, there are 2 main purplish, sublinqual veins you can see underneath your tongue. But consider all the taste buds you have as well.
It depends on the person. Usually you don't get your tongue pierced if your vein is in the way because it causes excessive bleeding.
The tongue piercing done by a professional body piercer reduces the odds of striking a vein greatly, it's what we do and we know what to look for. Be sure to get this piercing done by an experienced professional body piercer and you will have no worries. Research, ask questions and check references.
i am pretty sure it is in the tongue
there are no vains
I've heard one story where the piercer went around the vein in the middle of the girls tongue somehow but it's supposed to be dangerous and I'm not sure that they're supposed to do it
Actually yes you can. Some people have a third vein running down the middle of their tongue and when one gets a tongue piercing it is done in the middle of the tongue. So when the needle pierces it it will bleed more than tongues w/o that third vein would. But you can still get a tongue piercing if you have that 3rd vein. All professional piercers know how to control bleeding. It's in their training
Don't! Do it professionally. If you do it yourself, you may hit a vein and lose all sensation in your tongue.
Is it on the bottom side of your tongue? That's one of the veins that delivers blood to your tongue. The blue coloring of your vein appears purple through the pink coloring of your tongue.
I am a professional piercer and as long as the piercer is comfortable with piercing a tongue that short, then it IS ok. I have pierced many tongues that could not extend past the teeth or lip. They have healed up fine as well, and no signs of rejection occurred, though the likelihood of rejection raises significantly the closer to the tip of the tongue you are.
Generally no, there could be some complications with bleeding, but they should be controllable. You can die if the lingual artery is pierced but that's highly unlikely to happen... Infection is also another risk, but again - manageable if it happens.