The surgicalprocedure that creates an opening at the trachea is called a ____.

A common cause of peripheral neuropathy is:

a. Diabetes mellitus b. Diabetes insipidus c. Multiple sclerosis d. Myasthenia gravis

Bruising behind the ears, which is a delayed sign of a skull fracture, is called:

A. raccoon sign. C. Cushing's sign. B. Battle sign. D. Hof mann's sign.