All of the following are considered physicians by Medicare EXCEPT a(n):

The rabies vaccine was discovered by which medical historian?

A) Semmelweiss B) Vesalius C) Fleming D) Pasteur

Very young children tend to breathe predominantly with their diaphragm because:

A. their chest wall and ribs are very pliable. B. they require less tidal volume per breath. C. their intercostal muscles are not fully developed. D. there is no nerve innervation of the intercostal muscles.