Across
- 4. The term for thinking
- 5. Projections that receive and transmit the impulse toward the cell body
- 8. Division of the nervous system that extends beyond the brain and spinal cord
- 10. The impulses sent by the nerve cells to muscles and glands; includes muscle contractions and reflexes, glandular secretions, changes in hormone levels or activation of immune reactions
- 11. Division of the nervous system that includes the brain and spinal cord
- 13. Receive stimuli from the external environment
- 15. Impulse-conducting cells that are the simplest units of the nervous system
- 17. Type of receptor that detects chemical stimuli
- 19. Type of sensory neuron that transmits the impulse toward the CNS
- 21. Sensory ___________ is the gradual decrease in receptor responsiveness to a constant or prolonged stimulus
- 22. Type of receptor that detects actual or potential tissue damage and serves as a protective function
- 23. When nerve cells detect internal or external stimuli and transmit the information to the brain and spinal cord
- 24. Type of receptor that detects pressure and soundwaves
- 27. Type of neuron that transmits an impulse between the sensory and motor segments of the nervous system
- 28. Division of the autonomic nervous system that controls energy expenditure and is referred to as "fight or flight"
- 29. Ability of a neuron to release a neurotransmitter
- 30. Ability of a neuron to transmit an impulse along the length of their axon and on to other neurons, muscles, or glands
Down
- 1. Subdivision of the peripheral nervous system that regulates involuntary activities of organs, glands, and smooth muscle
- 2. The basic structures of the nervous system include the brain, spinal cord, cranial and spinal nerves, sense organs, and
- 3. Chemical messengers that are released by synaptic vesicles upon arrival of a nerve impulse
- 6. Type of receptor that detects light stimuli
- 7. Contains the nucleus and other organelles
- 9. Type of motor neuron that transmits the impulse away from the CNS
- 12. Ability of a neuron to respond to a stimulus and produce an impulse
- 14. Division of the autonomic nervous system that controls energy conservation and is referred to as "rest and digest"
- 16. Receive stimuli from the internal environment
- 18. Type of receptor that detects changes in electrolyte concentrations in blood plasma
- 20. Type of receptor that detects changes in environmental temperature
- 25. The most common neurotransmitter
- 26. Projection that transmits the impulse away from the cell body
- 29. Subdivision of the peripheral nervous system that transmits sensory input and controls the voluntary function of skeletal muscles