Answer:
peripheral:
Ex the perimeter of a circle or other closed curve also : the perimeter of a polygon. 2 : the external boundary or surface of a body. 3a : the outward bounds of something as distinguished from its internal regions or center : confines. b : an area lying beyond the strict limits of a thing.
nervous:
Nervousness is a common feeling brought on by your body's stress response. This involves series of hormonal and physiological responses that help prepare you to handle a perceived or imagined threat
system:
imply put, a system is an organized collection of parts (or subsystems) that are highly integrated to accomplish an overall goal.
