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

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

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

2. Molecules form cells Cell Molecules

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

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

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

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.

All of the organ systems form the organism