Human Organ Systems
A. From Atoms to Organisms
Every level of the system relies on the smooth workings of the level preceding it.
Malfunction at any level may have life-threatening consequences.
B. Organ System Overview
Organ systems have a primary function, but all are closely interrelated and impact each other. For
example, the nervous, muscular, skeletal, respiratory, and cardiovascular systems work together to
create movement of the body.