The substance released by platelets that, through constriction and dilation of blood vessels, affects blood flow to an injured or affected site is called:

Luminous infrared is usually positioned ________ away from the treatment area

A) 24-30" B) 6-12" C) 12-18" D) 18-24"

An alcoholic with any degree of altered mental status following a fall or a head-injured elderly patient taking anticoagulants should be suspicious of having a(n):

a. intracerebral hemorrhage b. epidural hematoma c. subdural hematoma d. subarachnoid hemorrhage