| Across |
| 3. |
Major inhibitory neurotransmitter that reduces neuronal excitability. GABA |
| 4. |
_____selection Process where traits that enhance survival are passed on. Natural |
| 7. |
_____arc Pathway for reflex actions. Reflex |
| 8. |
_____neurons Transmit commands from the CNS to muscles. Motor |
| 9. |
Neurotransmitter affecting mood, sleep, and appetite. Serotonin |
| 11. |
Controversial practice of improving genetic quality by selective breeding. Eugenics |
| 12. |
_____sclerosis Disease where the immune system attacks the myelin sheath of neurons. Multiple |
| 13. |
_____nervous system Promotes rest and digestion. Parasympathetic |
| 18. |
Drugs that block or reduce neurotransmitter effects. Antagonists |
| 20. |
_____cells Support and protect neurons. Glial |
| 21. |
____neurotransmitters Chemicals that prevent neurons from firing. Inhibitory |
| 22. |
Controls involuntary bodily functions AKA The Autonomic nervous system. ANS |
| 23. |
Minimum stimulus needed to trigger an action potential. Threshold |
| 24. |
Hormone that stimulates appetite. Ghrelin |
| 28. |
_____nervous system Activates fight-or-flight response. Sympathetic |
| 29. |
_____transmission Process of sending signals between neurons. Neural |
| 32. |
Brain and spinal cord. AKA The Central nervous system CNS |
| 35. |
Genetic and biological factors influencing development. Nature |
| 36. |
_____perspective How natural selection influences behavior and mental processes. Evolutionary |
| 38. |
_____Drug that can act as a depressant, stimulant, or hallucinogen. Marijuana |
| 41. |
Hormone that regulates hunger and energy balance. Leptin |
| 42. |
_____Stimulant that increases dopamine levels. Cocaine |
| 44. |
Reabsorption of neurotransmitters by the sending neuron. Reuptake |
| 46. |
Neurotransmitters that act as natural painkillers and mood enhancers. Endorphins |
| 48. |
_____potential Electrical impulse traveling down a neuron. Action |
| 49. |
_____period Time after an action potential when a neuron can’t fire again. Refractory |
| 50. |
_____predisposition Increased likelihood of developing a condition based on genetics. Genetic |
| 51. |
Neurotransmitter involved in reward, motivation, and motor control. Dopamine |
| 52. |
_____Nerve cells transmitting information. Neurons |
| 53. |
_____studies Research comparing adopted children to their biological and adoptive parents. Adoption |
| 54. |
_____Drugs that increase neural activity and energy. Stimulants |
| 57. |
_____Drugs that decrease neural activity and slow body functions. Depressants |
| 58. |
Hormone involved in social bonding and childbirth. Oxytocin |
| 59. |
_____potential Electrical charge across the neuron membrane when not firing. Resting |
| 60. |
_____neurotransmitters Chemicals that stimulate neurons to fire. Excitatory |
