Across
- 2. nerve cells that function as relays between other neurons
- 4. nerve fibers that carry impulses toward the cell body
- 6. the simplest of the nerve pathways, involves quick automatic responses
- 8. a junction between two nerve cells
- 10. an injury to the nervous system caused by blockage or rupture of a blood vessel in the brain
- 11. the lower portion of the brain stem that controls breathing and heartbeat
- 12. a wave of electrical activity that transmits an impulse down a nerve
- 14. the long fiber of a neuron that transmits impulses from the cell body to other nerve cells
- 15. snail-shaped structure of the inner ear senses sound vibrations and generates nerve impulses
- 17. defective vision caused by an asymmetrically curved cornea
- 21. part of the brain responsible for thought, memory, and intelligence
Down
- 1. the part of the brain that coordinates skeletal muscle activity
- 3. structures in the ear that contribute to one's sense of balance
- 5. abbreviation for the division of the nervous system that includes the cranial and spinal nerves
- 7. structure of the limbic system that controls the physical effects of emotion
- 9. viral disease of the spinal cord that destroys motor neurons
- 13. type of nerve cells that carry impulses from the brain and spinal cord to the body parts
- 16. the nerve that carries impulses from the inner ear to the brain
- 18. protective layers of the brain and spinal cord
- 19. covering of some cell axons responsible for white matter
- 20. brain lobe responsible for personality, judgment, self-control, and voluntary movement