Radial veins

In anatomy, the radial veins are paired veins that accompany the radial artery through the back of the hand and the lateral aspect of the forearm. They join the ulnar veins to form the brachial veins.

They follow the same course as the radial artery.

Severing the radial artery can result in unconsciousness in as little as 30 seconds, and death in as little as two minutes. The Brachial artery runs along the inside of your arms. This artery is deep, but severing it will result in unconsciousness in as little as 15 seconds, and death in as little as 90 seconds.