A thickening of the skin on the top or sides of the toes is called a(n):

A synapse is:

A) a cluster of sensory nerve cells. B) the body's main neurotransmitter. C) a slight gap between nerve cells. D) the point where a nerve cell terminates.

Electronic claims submission software includes an error-edit feature that identifies errors that would cause the claim to be ____________________ or ____________________.

Fill in the blank(s) with the appropriate word(s).