Levels of Structural Organization
Smooth muscle celi
(2) Cellular level
Cells are madę up of molecules
Molecules
Atoms
Smooth - muscle tissue
(?) Chemical level Atoms combine to form molecules
(i) Tissue level
Tissues consist of similar types of cells
Cardiovascular
system
— Epithelial tissue — Smooth muscle tissue
Connective
tissue
(4) Organ level
Organs are madę up of different types of tissues
Heart
Blood
yessels
Blood - vessel (organ)
The human organism is madę up of many organ Systems
(?) Organ system level
Organ Systems consist of different organs that work together closely
Figurę 1.1