Across
- 1. part of the hindbrain; involved in producing smoothly coordinated skeletal muscle activity
- 3. type of CNS supporting cell; phagocytes that ingest debris such as bacteria or dead cells
- 5. chemical released by neurons that may, upon binding to receptors of neurons or effector cells, stimulate or inhibit them
- 6. type of CNS supporting cell; that has many cellular processes, each of which makes up a myelin sheath
- 7. the division of the nervous system that functions involuntarily. Innervates cardiac muscle, smooth muscle, and glands; also called involuntary nervous system
- 10. the gray area of the central nervous system; contains unmyelinated nerve fibers and nerve cell bodies
- 12. cells associated with nerve endings that serve as touch receptors
- 13. a white, fatty lipid substance
- 15. completes the pathway between afferent and efferent neurons; also called an association neuron
- 17. the region of communication between neurons, or a neuromuscular junction between a neuron and a muscle cell
- 19. the largest part of the brain; consists of right and left cerebral hemispheres
- 20. the non neuronal tissue of the central nervous system that performs supportive and other functions, also called glial cells or gila
- 21. neuron process that carries impulses away from the nerve cell body; different process; the conducting portion of the nerve cell
- 22. cells of the nervous system specialized to transmit messages throughout the body
- 24. a group of nerve cell bodies located in the peripheral nervous system
Down
- 1. the brain and spinal cord
- 2. the membranes that cover the brain and spinal cord
- 4. type of CNS supporting cell; assists in exchanges between blood capillaries and neurons
- 8. a system of nerves that connects the outlying parts of the body with the central nervous system
- 9. the branching extensions of neurons that carry electrical signals to the cell body; the receptive portion of a nerve cell
- 11. a peripheral nerve ending specialized for response to a particular types of stimuli
- 14. carrying to or toward a center
- 16. carrying away or away from
- 18. the part of a neuron containing the nucleus; the metabolic center of a neuron
- 23. automatic reaction to stimulus