A procedure in which a flexible fiber-optic tube is passed through the patient's mouth to the stomach is called a ________.

If a 1 L IV bag is running at 60 mL/hr, how long will it last?

A) 4 hours B) 8 hours C) 16 hours D) 24 hours

The myocardium:

A) is a double-walled sac that is filled with fluid. B) is the smooth inner layer that reduces friction as the blood flows through the heart. C) contracts to pump blood. D) none of the above.