1. Levels of Structural Organization
Atom
Molecule
Cell
Tissue
Organ
Organ System
Organism

2. carbon Molecule phospholipid Cell nerve cell Tissue nervous tissue
Examples:
Atom
Molecule
Cell
Tissue
Organ
Organ System
Organism
carbon
phospholipid
nerve cell
nervous tissue
brain
nervous system
human

3. 1. Atoms combine to form molecules
Ex: sugar, water, protein
Atoms
Molecule

4. 2. Molecules form cells
Cell
Molecules

5. 3. Cells form tissues
Similar cells with a common function form tissues
There are 4 basic tissue types in the human body:
Epithelial
Nervous
Muscular
Connective

6. Specialized cells perform specific tasks.
4. Specialized cells function together in tissues, organs, organ systems, and the whole organism.
Specialized cells perform specific tasks.
Tissues are groups of similar cells working together.
tissue
cell
epithelial tissue
connective tissue
muscle tissue
nervous tissue

7. 5. Tissues form organs
Two or more tissue types form an organ
An organ is a structure that performs a specific function for the body

8. 6. Organs form Organ Systems
A group of organs which work together for a common purpose is an organ system
Put all the organ systems together and you create an ORGANism
Nervous System
Brain, Spinal Cord, etc.

9. All of the organ systems form the organism