WHAT DOES ANATOMY STUDY? - answer Study of structure of the human body and
its parts
- Derived from the Greek word "cutting up"
WHAT DOES PHYSIOLOGY STUDY? - answer Study of the functions of the human
body and its parts
- Derived from the Greek word "relationship to nature"
LEVELS OF ORGANIZATION IN ORDER: - answer1. Subatomic particles
2. Atom
3. Molecule
4. Macromolecule
5. Organelle
6. Cell
7. Tissue
8. Organ
9. Organ System
10. Organism
SUBATOMIC PARTICLES: - answer Protons, neutrons, and electrons that make up
cells
Level #1 in level of organizations (lowest level of organization)
ATOM: - answer Tiny particles that make up chemicals (hydrogen, carbon)
Level #2 in level of organizations
MOLECULE: - answer Particles consisting of atoms joined together (water, glucose)
Level #3 in level of organizations
MACROMOLECULE: - answer Large particles consisting of molecule (DNA, Protein)
Level #4 in level of organizations
ORGANELLE: - answer Functional part of a cell (mitochondrion, lysosome)
, Level #5 in level of organizations
CELL: - answer Basic unit of structure and functions (muscle, nerve, or blood cell)
Level #6 in level of organizations
TISSUE: - answer Layer or mass of cells with specific function (adipose tissue)
Level #7 in level of organizations
ORGAN: - answer Group of different tissues with a function (heart, kidney, stomach)
Level #8 in level of organizations
ORGAN SYSTEM: - answer Group of organs with common function (digestive system)
Level #9 in level of organization
ORGANISM: - answer Composed of organ systems interacting (human)
Level #10 in level of organization (highest level)
LIFE DEPENDS ON 5 ENVIRONMENTAL FACTORS. WHICH ONES? - answer1.
Water
2. Food
3. Oxygen (gas)
4. Heat
5. Pressure
WATER: - answer- Most abundant substance in body
- Environment for metabolic processes
- Required for transport of substances
- Regulation of body temperature
- Water in cell: 65% - intracellular fluid
- Water outside of cell: 55%
FOOD: - answer- Provides necessary nutrients
- Supplies energy
- Supplies raw materials for building living tissue
OXYGEN (GASES): - answer- 1/5 of air
- Used to release energy from nutrients
HEAT: - answer- Is a form of energy in our environment
- Helps maintain body temperature
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