Across
- 3. two lima bean-sized neural clusters in the limbic system; linked to emotion
- 9. part of the peripheral nervous system that controls the glands the muscles of the internal organs (such as the heart). Its sympathetic division arouses; its parasympathetic division calms
- 14. nerve cell; the basic building block of the nervous system
- 16. technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissue. shows brain anatomy
- 17. pair of endocrine glands that sit just above the kidneys and secrete hormones that help arouse the body in times of distress
- 18. oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull
- 20. neuron's bushy and branching extensions that receive and integrate messages
- 24. chemical messengers that cross the synaptic gaps between neurons
- 28. neural center located in the limbic system; helps process for storage explicit 9concious0 memories of facts and events
- 29. body's speedy, electromechanical communication network, consisting of all the nerve cells of the peripheral and central nervous systems
- 33. part of the nervous system containing sensory and motor neurons that connect to central nervous system to the rest of the body
- 35. visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task
- 36. cells in the nervous system that support nourish, and protect neurons
- 37. division of automatic nervous system that calms that body, conserving its energy
- 38. the division of the peripheral nervous system that controls the body's skeletal muscles
- 39. fatty tissue layer segmentally encasing the axons of some neurons
- 40. neurons that coming outgoing information from the brain and spinal cord to the muscles and glands
Down
- 1. part of nervous system containing the brain and spinal cord
- 2. natural opiate-like neurotransmitters linked to pain control and pleasure
- 4. brain imaging technique that measures magnetic fields from the brain's natural electrical activity
- 5. a molecule that inhibits or blocks a neurotransmitter's actions
- 6. a molecule that increases and neurotransmitter's action
- 7. nerve network that travels through the brainstem into the thalamus and plays an important role in controlling arousal
- 8. technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans.
- 10. the neuron extension that passes messages through its branches to other neurons or other muscles and glands
- 11. an amplified recording of the waves of electrical activity sweeping across the brain's surface; waves measured by electrodes placed on the scalp
- 12. neurons within the brain and spinal cord that communicate internally and process information between sensory inputs and motor inputs
- 13. tissue destruction
- 15. division of the automatic nervous system that arouses the body, mobilizing its energy
- 19. bundled axons that form neural cables connecting the CNS with muscles, glands, and sense organs
- 21. body's "slow" chemical communication system, a set of glands that secrete hormones into the bloodstream
- 22. series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice of the brain's structure
- 23. neural structure lying below the thalamus directs several maintenance activities (earing, drinking, body temperature), helps govern the endocrine system via the pituitary gland, and is linked to emotion and reward
- 25. the base of the brainstem; controls heartbeat and breathing
- 26. brain's sensory control center, located on top of the brainstem; directs messages to the sensory receiving areas in the cortex and transmits replies in the cerebellum and medulla
- 27. body part of the neuron that contains nucleus; cell's life support system
- 30. neural system located below the cerebral hemispheres, associated with emotion and drives
- 31. "little brain" at the rear of the brainstem; functions include processing sensory input, coordinating output and balance, and enabling nonverbal learning and memory
- 32. brief resting period that occurs after a neuron has fired
- 34. neurons that carry incoming information from the body's tissues and sensory receptors to the brain and spinal cord