Across
- 9. a neutral signal that promotes an electrical signal called action potential
- 10. the level of stimulation required to trigger a neural impulse
- 12. cells in the nervous system that support, nourish, and protect neurons
- 14. Fluid-filled brain areas
- 15. A visual display of brain activity that detects
- 17. The part if the peripheral nervous system that controls the glands and the muscles of the internal organs (such as the heart).
- 19. Tissue destruction
- 21. The division of the autonomic nervous system that calms the body, conserving its energy.
- 25. a molecule that inhibits or blocks a neurotransmitter’s action
- 27. a molecule that increases a neurotransmitter’s action
- 31. Chemical messengers that are manufactured by the endocrine glands, travel through the bloodstream and affect other tissues.
- 32. in neural processing is a brief resting pause that occurs after a neuron has fired, subset action potentials cannot occur until that axon returns to its resting state
- 34. a neural impulse
- 36. A brain imaging technique that measures magnetic fields from the brain’s natural electrical activity.
- 37. A technique that uses magnetic fields and radio waves to produce computer-generated images of soft tissues.
- 39. electrically charged atoms
- 43. the sensory and motor neurons that connect the central nervous system (CNS) to the rest of the body.
- 46. sympathetic and parasympathetic nervous system work together to keep us in a steady internal state called
- 47. In Front of the hypothalamus and is a limbic system reward center
- 50. neurotransmitter’s reabsorption by sending a neuron.
- 51. The belief that studying bumps on the skull could reveal a person's underlying brain size, character traits, and mental abilities
- 54. a neuron’s reaction of either firing (with a full-strength response) or not firing
- 55. is a nerve cell; the basic building block of the nervous system
- 56. Uses light to control the activity of individual neurons.
- 57. Helps coordinate movement and control sleep
- 58. is the loss of the inside/outside charge difference which causes the next axon channels to open
- 59. two lima-bean-sized neural clusters in the limbic system; linked to emotion such as aggression and fear
- 60. A type of MRI technology that maps long-distance brain fiber connections
- 61. The division of the autonomic nervous system that arouses the body, mobilizing its energy
Down
- 1. prevents action potential in a receiving neuron
- 2. the brain and spinal cord
- 3. Networks The brains neurons clusters into workgroups called
- 4. A nerve network that travels through the brainstem into the thalamus and plays an important role in controlling arousal
- 5. The endocrine system's most influential gland. Regulates growth and controls other endocrine glands.
- 6. neurotransmitters-messenger at every junction between motor neuron and skeletal muscles. When it's released muscles contract and when it is blocked muscles can’t contract and become paralyzed.
- 7. The junction between the axon tip of the sending neuron and the dendrite or cell body of the receiving neuron.
- 8. system Neural system (includes the amygdala, hypothalamus, and hippocampus) located below the cerebral hemispheres
- 11. a neuron's often bushy, branching extensions that receive and integrate messages, conducting impulses towards the cell body
- 13. the body’s speedy electrochemical communication network consisting of all the nerve cells of the peripheral and central nervous systems.
- 16. are chemical messengers that cross the synaptic gaps between neurons.
- 18. A fatty tissue layer segmentally encasing the axons of some neurons
- 20. Two-way information highway connecting the peripheral nervous system and the brain
- 22. A 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. The body’s “slow” chemical communication system; a set of glands that secrete hormones into the bloodstream
- 24. A neural center located in the limbic system; helps process for storage explicit (conscious) memories of facts and events.
- 26. axon terminal of one neuron is separated from the receiving neuron by_____
- 28. The brain's sensory control center, located on top of the brainstem
- 29. A simple, automatic response to a sensory stimulus, such as the knee-Jerk response
- 30. A neural structure lying below the thalamus; it directs serval maintenance activities such as eating, drinking, body temperature
- 33. An amplified recording of the waves of electrical activity sweeping across the brain's surface.
- 35. The neuron extension that passes messages through its branches to other neurons or to muscles or glands
- 36. The base of the brainstem controls heartbeat and breathing
- 38. Can see brain activity as well as structure. Measures blood flow by comparing successive MRI scans.
- 40. neurons that carry incoming information from the body's tissues and sensory receptors to the brain and spinal cord
- 41. The division of the peripheral nervous system that controls the body’s skeletal muscles.
- 42. Brain activity supports mind wandering and daydreaming
- 44. neurons that carry outgoing information from the brain and spine to the muscles and glands.
- 45. The “little brain” at the rear of the brainstem
- 48. A pair of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that helps arouse the body in times of stress.
- 49. The oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull
- 52. “morphine within” natural opiates- like neurotransmitters linked to pain control and pleasure.
- 53. neurons within the brain and the spinal cord; they communicate internally and process information between the sensory inputs and motor outputs.