The human body is capable of adapting to a variety of changes in both internal and external conditions. The process that allows the body to adapt in this way is called homeostasis. ____________________

Cells that can kill bacteria are:

A. macrophages, mast cells, and polymorphonuclear neutrophils. B. keratinocytes, platelets, and macrophages. C. macrophages and polymorphonuclear neutrophils. D. platelets, polymorphonuclear macrophages, and Meissner's corpuscles.

Checking skin signs is a way of evaluating a patient's perfusion. Perfusion is best described as:

A) the exchange of gas and carbon dioxide in the alveoli. B) the removal of waste from cells and tissues. C) the delivery of oxygenated blood to the cells and tissues. D) the movement of fluids in the body.