Chapter 1 Study Guide
Anatomy: the study of body structures
Physiology: the study of how body structures function
Levels of Organization in the Human Body
1. Atom: smallest unit of matter
2. Molecule: atoms bonded together (water, DNA)
3. Organelle: structures inside a cell
4. Cell: basic unit of life
5. Tissue: groups of cells working together
6. Organ: two or more tissues working together
7. Organ System: related organs working together for a major function
8. Organism: an entire living individual
Anatomical Position:
Standing upright
Feet forward
Arms at sides
Palms facing forward
Anatomy: the study of body structures
Physiology: the study of how body structures function
Levels of Organization in the Human Body
1. Atom: smallest unit of matter
2. Molecule: atoms bonded together (water, DNA)
3. Organelle: structures inside a cell
4. Cell: basic unit of life
5. Tissue: groups of cells working together
6. Organ: two or more tissues working together
7. Organ System: related organs working together for a major function
8. Organism: an entire living individual
Anatomical Position:
Standing upright
Feet forward
Arms at sides
Palms facing forward
