All MCOs are now required to be accredited by the National Committee for Quality Assurance

When is a natural gas shut-off valve in the closed position?

a. When the stem is fully rotated inward b. When the handle is at a right angle to the pipe c. When the bar is parallel to the pipe d. When the valve handle is fully rotated clockwise

During expiration, why does gas flow out from the lungs to the atmosphere?

a. Palv is less than at the airway opening. b. Palv is the same as at the airway opening. c. Palv is greater than at the airway opening. d. Airway pressure is greater than Palv.