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Across 3. Endocrine glands that are located right above the kidneys. 7. Glands located on the underside of the brain; it produces the largest amount of the body's hormons 9. Forbrain region that relays and translates incoming messages,from the sense receptors, except those for smell. 12. White fatty covering found on some axon. 13. A gland located in the center of the brain that appears to regulate activity levels over the course of the day. 14. The par of the nervous system compromising the brain and spinal cord. 15. Region between the hindbrain and forebrain; it is important for hearing and sight, and it is one of several in the brain where pain is registered. 19. A shift in electrical change in a tiny area of a neuron. 20. Part of the cerebral cortex that is responsible for voluntary movement; it is also important for attention, goal directed behavioral, and appropriate emotional experiences 22. Part of the cerebral hemisphere that receives and interprets visual information. 23. Four tiny glands embedded in the thyroid; they secrete parathormone. 25. Division of the nervous system that connects the central nervous system to the rest of the body. 28. The change in electrical potential associated with the passage of an impulse along the membrane of a muscle cell or nerve cell. 29. The reproductive glandes, testes in males and ovaries in females. 32. Hemispheres of the brain are designed to handle specific tasks 33. Part of the hindbrain that connects the cerebral cortex at the top of the brain to the cerebellum. 34. Structure at the end of a axon terminal branch. 35. Structure in the hindbrain that controls certain reflexes and coordinates the body's movements. 36. Part of the cerebral hemisphere that helps regulate hearing, balance and equilibrium and certain emotions and motives. 37. A Period after firing when a neuron will not fire again no matter how strong the incoming message may be. 38. Endocrine gland located below the voice box; it produces the hormones thyroxin

Down 1. The outer surface of the two cerebral hemispheres that regulates mos complex behaivor 2. The level an impulse mus exceed to fire. 4. The branching process of the neuron that conducts impulses toward the cell 5. Chemical released by synaptic vessels that travel across the synaptic space and affect adjacent neurons. 6. Top part of brain, including the thalamus, hypothalamus, and cerebral cortex. 8. Principle that the action potential in a neuron does not vary in strength; The neuron either fires at full or it dose not fire at all. 10. Indivisual cell that is the smallest unit of the nervous system. 11. Area composed of axon terminal of one neuron, the synaptic space, and the dendrite or cell body of the next neuron. 16. A period after firing when a neuron is returning to its normal polarized state and will fire again only if the incoming message is stronger than usual. 17. Ring of structures that play in learning and emotional behavior. 18. The compact area of a nerve cell that constitutes the nucleus and surrounding cytoplasm, excluding the axons and dendrites. 21. The firing of a nerve cell. 24. Ingle long fiber extending from the cell body; it carries outgoing messages. 26. railroad worker who survived a severe brain injury that dramatically changed his personality and behavior; case played a role in the development of the understanding of the localization of brain function 27. Part of the cerebral lobe that receives information from throughout the body. 30. Area containing the medulla, pons, and cerebellum. 31. Part of the hindbrain that controls such functions heart rate, blood pressure and breathing. 33. Organs lying in between the stomach and the small intestine; It secretes insulin and glucagon to regulate blood pressure levels.