Across
- 3. ____ nervous system (CNS), the brain and spinal cord
- 5. ______ nervous System (ANS), the part of the peripheral nervous system that controls internal biological functions
- 8. ______ nervous system (SNS), the part of the peripheral nervous system that controls voluntary movement of skeletal muscles
- 10. _____ cord, nerves that run up and down the length of the back and transmit most messages between the brain and body
- 12. _____ nervous system (PNS), nerves branching beyond the spinal cord into the body
- 13. the expression of a particular trait in an organism
- 16. the different regions into which the cerebral cortex is divided
- 18. the genetic transmission of characteristics from parents to offspring
- 19. a part of the brain that covers the brain's central core, responsible for sensory + motor control, and the process of thinking and language
- 20. the basic building blocks of heredity
- 21. the set of genes in an organism
- 24. ____ system, a chemical communication system, using hormones, by which messages are sent through the bloodstream
- 26. the chemicals released by neurons, which determine the rate at which other neurons fire
Down
- 1. ____ twins, twins who come from one fertalized egg, same heredity
- 2. _____ resonance imaging (MRI), a measuring technique used to study brain structure and activity
- 4. a small part of the brain above the pons that arouses the brain, integrates sensory information + relays it upward
- 6. ____ twins, twins who come from two different eggs, fertalized by two different sperm
- 7. ____ gland, the center of control of the endocrine system that secrets a large number of hormones
- 8. the gap that exists between individual nerve cells
- 9. ____ emission tomography (PET), an imaging technique used to see which brain areas are activated while performing tasks
- 11. descended from ancestors with dissimilar genetics
- 14. a part of the brain located at the rear base of the skull that is involved in the basic processes of life
- 15. a machine used to record the electrical activity of large portions of the brain
- 17. ____ axial tomography (CT), an imaging technique used to study the brain to pinpoint injuries and brain deteriorization
- 22. the long, thin cells of nerve issue along which messages travel to and from the brain
- 23. chemical substances that carry messages through the body in blood
- 25. descended from ancestors with similar genetics