A person who is leaning back in his chair with his arms folded across his chest is displaying ________.

What is the change in FRC in healthy persons shifting from the sitting to the supine position?

A. FRC decreases by 50%. B. FRC decreases by 25%. C. FRC increases by 50%. D. FRC increases by 25%.

Under the Medicare global surgical package

A. only the pre-operative visit can be billed in addition to the surgery itself. B. only the post-operative visit can be billed in addition to the surgery itself. C. related pre- and postoperative visits cannot be billed in addition to the surgery. D. all pre- and postoperative visits can be billed in addition to the surgery itself.