In the brain and spinal cord, the myelin sheath is formed by the:

The sensation felt when palpating an arterial-venous fistula or shunt is known as a:

A) bruit. B) fluttering. C) frill. D) thrill.

Cancer of the larynx is known to affect:

a. More women than men. b. More men than women. c. Men and women equally. d. Children age 10–15.