When a health care worker is not doing strenuous work, a back brace can be loosened

Roughly half our daily vitamin ________ requirements are produced by intestinal bacteria

A) K B) B12 C) C D) D

What neurologic disorder produces a syndrome of abnormal movements marked by de-struction of dopamine-producing neurons in the brain?

a. Guillain Barré syndrome b. Parkinson disease c. Poliomyelitis d. Alzheimer gravis