Anatomical Position, Directional and Regional Terminology
Directional terminology allows us to describe where one body part is in relation to another. For
example, the heart is medial to the lungs. This means that the heart is more at the center of the
Figure 1. A light microscope.
36 BIOlO lHuman Anatomy and Physiology I Name
Forms the coverings and linings of all internal and external free body surfaces. This tissue forms
membranes and glands, and performs other functions such