Levels of organization
1. Sub-anatomic level
2. Atomic Level
3. molecular/chemical level
4. organelle level
5. cellular level
6. tissue level
7.organ level
8. organ system level
9. organism level

1. Sub-anatomic level
protons (+), neutrons and electrons (-)

2. Anatomic level
elements like iron, copper, oxigen, hydrogen

3. molecular/chemical level
oxygen, hydrogen=H2O

4. organelle level
mitochondrial, lysosomes, nucleus (organism inside of a cell)

5. Cellular levelte
leukocytes, thrombocytes, platelets, adipocytes

6.tissue level
connective, muscular, ephitelial, and nervous system

7. organ level
heart, liver, kidneys, spleen, lungs, gallbladder, pancreas etc...

8. organ system
13 organ systems.
respiratory, digestive, skeletal, endocrine, intergumentary, lymphatic, cardiovascular, immune, circulatory, excretory, muscular, nervous, reproductive and urinary system

9. organism level
any living thing, animal, human and plants