Where does oxygen-poor blood empty into the heart when returning from the body?

Oxygen cylinders are typically filled to pressures equal to:

A) 2,000 pounds per square foot (psf). B) 3,000 pounds per square inch (psi). C) 3,000 pounds per square foot (psf). D) 2,000 pounds per square inch (psi).

Which of the following significant mechanisms of injury is unique to the infant and child?

A) Vehicle-pedestrian collision B) Penetrating injury to the head C) Ejection from a car's back seat D) Fall from greater than 10 ft