CIRCULATORY SYSTEM. Purpose: transportation- move substances to and from cells linking cells with the outside environment Substances include: O 2, CO.
EOI notes I. Cells 1) There are 5 levels of organization: cell tissue organ system organism 2) Cell theory: a) Cells are the basic unit of living.
Chapter 7 - The Skeletal System Individual bones are the organs of the skeletal system. A bone contains very active tissues.
