When a piece of skin tissue is examined under a microscope, what type of procedure is being performed?

Metoclopramide exerts its effects by blocking ______________________

a. Anticholinergic receptor sites b. Histamine 2 receptor sites c. Dopaminergic receptor sites d. Opiate receptor sites

High air temperature reduces the body's ability to lose heat by:

A. radiation. B. convection. C. conduction. D. evaporation.