Nervous System

5. type of neuron that carries signals to muscles and glands
6. area of the brain that consists of myelinated axons
9. controls body movements and motor neurons
10. _____ Nervous System; senses the internal environment and responds to maintain homeostasis
11. bundle of axons
16. hormonal control of much of the endocrine system
17. state in which a neuron is prepared to carry a nerve impulse
18. controls vital functions such as heart rate and breathing
19. _____ Nervous System; governs the "fight or flight" response
20. _____ Nervous System; senses the external environment and allows conscious response to stimuli
22. _____Nervous System; counteracts the "fight or flight" response
25. extension of a neuron's cytoplasm that receives impulses from other neurons
26. cells that support the function of neurons
27. long, narrow structure that carries electrical impulses away from the cell body
28. controls conscious, intellectual functions
29. chemical that crosses a synapse to cause the impulse to continue in the next neuron

1. support cells that destroy pathogens in the central nervous system
2. type of neuron that collects environmental stimuli
3. _____ Nervous System; includes the brain and spinal cord
4. _____ Nervous System; includes motor and sensory nerves
7. sudden reversal of the electrical gradient as a nerve impulse occurs
8. lipid layers that act as insulators and increase the speed of impulse transmission along an axon
12. nerve impulse that travels away from the central nervous system
13. Node of _______; space between Schwann cells that form the myelin sheath
14. space across which a neuron will send neurotransmitters
15. area of the brain that contains cell bodies and dendrites
21. cell that carries electrical impulses
23. nerve impulse that travels toward the central nervous system
24. section of a neuron that contains the nucleus and other organelles