The primary function of the _____ is delivering oxygen to the cells and picking up carbon dioxide to be exhaled
A) red blood cells
B) white blood cells
C) platelets
D) lymph cells
A
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A small metal rod was thrown from a metal lathe while it was in operation and is now impaled in a man's inner thigh. Assessment indicates that there is no active bleeding from the site, but the surrounding tissues are ecchymotic. The paramedic asks you to stabilize the rod with bulky dressings. You recognize this action is important because it will:
A) Prevent motion of the rod and further internal injury B) Control any internal hemorrhage that may be occurring C) Prevent bacteria from entering into the body D) Apply pressure to the broken blood vessels in the skin
Which one of these injuries is most likely to cause peritonitis?
A) Contusion to the pancreas B) Stab wound to the small intestine C) Blunt trauma to the spleen D) Bullet injury to the liver
Most high-flow oxygen systems work using:
A) the venturi principle B) Bernoulli's principle C) viscous shearing and vorticity D) none of the above
If a DC circuit is
a. in series, the currents are different for each component (e.g., resistors). b. in series, the voltages are the same for each component. c. in parallel, the currents are equal for all paths of the circuit. d. in parallel, the voltages are equal for all paths of the circuit.