If the body core temperature exceeds ________, the brain stops functioning and the person loses consciousness.

Class IV antiarrhythmics (calcium channel blockers) relax smooth muscle and cause vasodilation and are useful for treating hypertension and:

A. hypotension B. stroke C. angina D. MI

The growth of fingernails occurs at the:

A. nail body. B. lunula. C. free edge. D. sides of the nail.