The first clue an EMT has to the possibility of a spinal cord injury is the ______ of ______. Knowing the stacked nature of the vertebrae will allow the EMT to imagine the injuries. In a motor vehicle collision, the most common injury type is ______ of the neck. Falls can result in _____ bones that intrude into the cord, or ______ fractures that actually crush the vertebrae. The phenomenon known as, _________ ________, can cause trauma along the spinal column, especially in the lumbar region. Firearms can lead to spinal injuries due to the uncertainty of the _______ of ________ of the bullet. Sports injuries may also cause spinal injury.