The spinal column is made up of ____ vertebrae that both support the human while walking upright and protect the spinal cord.

A loss of about 30-40 percent of the circulating volume is classified as a ________ hemorrhage

A) Class I B) Class II C) Class III D) Class IV

A bag-valve mask device with a reservoir and an adequate oxygen source (at least 15 LPM) will deliver an oxygen concentration of

(A) 21% (B) 40% to 60% (C) 80% (D) 100%