Across
- 3. nerve impulse
- 4. controls emotions and motives such as hunger, thirst, and aggression.
- 6. carries messages from the CNS to the periphery of the body.
- 7. extension of the spinal cord that carries information to and from the brain.
- 8. the study of how heredity and our genetics can affect us.
- 11. percentage of variation within a population in relation to heredity.
- 13. responsible for vision.
- 14. traits or patterns inherited from generation to generation.
- 16. carry messages in the endocrine system.
- 18. information processing system in our brains and nervous system.
- 19. coordinates fine muscle movement and balance.
- 20. rare and immature cells that can develop into any type of cell.
Down
- 1. an advantage for an organism from particular genetic traits.
- 2. fatty insulation for axons.
- 5. play a part in breathing, moving, sleeping, walking, and dreaming.
- 9. network of glands.
- 10. small open gap between neurons.
- 12. hold neurons in place and supply nutrients and oxygen for the neurons.
- 15. responsible for organizing and processing information.
- 17. involuntary and automatic reactions.