The wrist has several types of veins and arteries. The main veins in the wrist are dorsal digital veins, cephalic and basilic veins.
Yes it does, -.-
If your left hand and wrist veins get huge and pain begins you need to see immediate medical condition. You may have a clot.
yes very very sensitive because that's where the veins are.
The Related Links section has a link to a website that has a diagram of the arm.The bluish blood vessels visible when you look at your wrist are veins. The arteries are deeper and not located particularly near the veins. Gray's Anatomy has a transverse section of the wrist; if you look at it you'll see you'd have to cut fairly deeply to hit one of the arteries, and the other is buried behind a ligament.
The temperature of the wrist is than than that of the forearm because of the large number of veins in the forearm that are more close to the top of your skin.
Temperature has little, if anything to do with vein visibility. You can see veins at any given time (usually), if you look at your wrist or anyplace the skin is thin.
Pump fist, dangle arm/wrist below waist
The phobia of phobias is Phobophobia.
No you're fine. My teacher got one and she said the tattoo guy said it is not bad for you.
Phobias are an aspect of psychology, which is considered a science. So yes, phobias are a science of sorts
The usual location is the inside of the elbow, where veins are near the surface and larger than the ones found in the wrist.