1																				2
												3		4				5
	6										7
								8								9
10
											11
										12
				13
14							15
	16																			17
															18
19													20
									21
							22											23
																	24
						25
				26
																27
											28
		29

Across 5. gaps where the axon is exposed called Nodes of ?? 6. large mass of neurons protected by cranium, controls & coordinates body activities 7. this type of neuron carries impulses from brain to muscle/ gland 9. sense organs that receive stimuli 10. drugs that increase heart rate, blood pressure, and breathing rate 12. division of ANS “Fight or Flight”, stress & adrenaline 14. a bundle of axons bound together by connective tissue 15. neurons that react to stimuli from environment 16. organs/glands that respond to commands 19. nervous System activities that are under conscious control 24. another name for nerve cells 25. a stable internal environment 26. part of the brain that controls involuntary actions 28. largest part of the brain, controls voluntary activities 29. aka...the ear drum

Down 1. part of the brain that relays messages from sense organs to cerebrum 2. chemicals used to transmit an impulse across the synapse 3. viral disease of the Central Nervous System leading to paralysis & death 4. converts sound to impulses 8. connects motor & sensory 11. part of the brain that is responsible for hunger, thirst, fatigue, anger, body temperature 13. sense organs that receive stimuli 17. this type of neuron carries impulses from sense organs to brain/ spinal cord 18. short, branched fibers, receives impulses and sends them toward the cell body 19. the gap between the terminal branch and dendrite of two adjacent neurons 20. protected by vertebrate and coordinates impulses between brain and other body structures 21. part of the brain that controls coordination and balance of muscle movements 22. long, thin fiber that extends from the cell body, carries impulses away from the cell body 23. inside eye, processes the focused light 27. colorful partof the eye, light regulator