The primary pacemaker in a normally functioning heart is the:

Which of the following statements regarding materials used to construct foundation walls is MOST accurate?

A) Concrete block is found only in older buildings. B) Stone foundation walls are often constructed without bonding mortar or cement. C) Wood foundations are more difficult to insulate. D) Concrete foundations rarely develop fissures or cracks.

Referring to a patient by his or her disease, such as "the amputee," is a form of:

a. discrimination. b. sexual harassment. c. being politically incorrect. d. communication.