Across
- 3. the basic building blocks of the nervous system
- 4. conductive fiber of a neuron
- 5. twins that are developed from separate fertilized eggs
- 6. a brief electircal charge that travels down an axon
- 9. bundled axons that form neural cables with muscles
- 11. insulated fatty layer of axons that is used to speed up neural impluses
- 12. biochemical units of heredity that make up the chromosomes
Down
- 1. complete instructions for making an organism
- 2. magnetic fields and radio waves used to create computer generated images of soft tissue for brain anatomy
- 3. traits that lead to increased reproduction and survival will most likely be passed onto succeeding generation
- 7. interplay that occurs when the effect of one factor depends on another
- 8. invented by Franze Gall, theory that claimed bumps on the skull could reveal our mental abilities
- 10. receivers of neurons
- 11. a random error in gene replication that leads to a change