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Across 1. The __________ and spinal cord make up the central nervous system. 6. The __________ sends information to the brain about the position of your arm. 8. These glands sit on top of your kidneys. 11. The ANS works __________. 15. __________ spinal nerves go to one side of your body. 17. Some axons are long and and some are ________. 18. The __________ gland produces a hormone that speeds up the rate of cells burning fuel. 19. Hormone tells the cells in the liver to release sugar. 20. The endocrine systems works through chemicals called __________. 21. The central controller for many hormones is the called the __________ gland. 23. __________ gather information. 26. Neurons taking information back to your body are called __________ neurons. 28. Neurotransmitters send information across a __________. 29. Some axons are wrapped by a __________ sheath. 31. Central Nervous System for short

Down 2. These are chemicals that transmit information from one neuron to another. 3. This part of the brain controls complex muscle movement. 4. Peripheral Nervous System for short 5. The thymus __________ makes a hormone targetted to certain stem cells. 7. Your brain and nerves contain __________ of neurons. 9. Brainstem controls __________. 10. Connects the brain to the spinal cord 12. These are the powerhouses of the cell. 13. Most of the neurons in your CNS are this kind of neuron. 14. Even the slowest __________ transmit signals at about three feet per second. 16. The cerebral cortex contains specific cells that give, receive, and handle information. 22. The outer part of the cerebrum is the cerebral __________. 24. The end of the axon is called a __________. 25. Neurons taking information to the brain are called _________ neurons. 27. __________ cranial nerves go to one side of your head. 30. Autonomic Nervous System for short.