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AP Psych Unit 2 Flashcards

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14886474921Parts of a neuron0
15056520382cell bodythe cell's life support center, contains nucleus1
15056520383dendritethe branching extensions of a neuron that receive messages and conduct impulses toward the cell body, "selectively permeable"2
15056542729axonthe extension of a neuron, ending in branching terminal fibers, through which messages pass away from the cell body to other neurons or to muscles or glands3
15056546115myelin sheathfatty covering around axon, speeds neural impulses, deterioration can lead to multiple sclerosis4
15056548644glial cells-provide support, nutrition, insulation to help with neural connections -"worker bees" -influence learning, thinking, memory5
15056567950action potential-the firing of the neuron, selfing info through the axon in the form of an electrical charge -neurotransmitters released by terminal button -resti6
15056571737thresholdthe minimum stimulation that must be reached to fire the neuron7
15056575784excitatorythese neurotransmitters push gas pedal8
15056577752inhibitorythese neurotransmitters push the breaks9
15056580662refractory periodthe brief recharging period after action potential10
15056583257all-or-none principlethe law that the neuron either fires at 100% or not at all11
15056587286Synapsethe gap between neurons where NTMs are passed12
15056605411Serotonin-mood, hunger, sleep -depression (inhibitory)13
15056592184neurotransmitter-chemicals used in neural communication -released during action potential14
15056595284Acetylcholine-motor movement and memory -Alzheimer's (both inhibitory and excitatory)15
15056643840Norepinephrinealertness and arousal (excitatory)16
15056634755Glutamate-memory, brain activity -too much=headaches (excitatory)17
15056645818GABA-sleep, relieve anxiety -too little=insomnia (inhibitory)18
15056606400endorphins-pain, positive emotions -natural morphine (inhibitory)19
15056602310Dopamine-emotion, movement, attention -Schizophrenia and Parkinson's (both inhibitory and excitatory)20
15056596938reuptakewhen NTMs that don't pass to next neuron are reabsorbed into the sending neurons21
15056613391agonistmimics neurotransmitter22
15056623057Antagonistblocks neurotransmitter23
15056627062nervous systemall neurons of the body taken altogether to provide a communication network24
15056665979sensory neuronsneurons that receive information from the external world and convey this information to the brain via the spinal cord25
15056669631motor neuronsneurons that carry signals from the spinal cord to the muscles to produce movement26
15056670190InterneuronsCentral nervous system neurons that internally communicate and intervene between the sensory inputs and motor outputs27
15056670191central nervous system-processes, interprets, stores info -issues orders to muscles, glands, organs -brain and spinal cord -encased in bone for protection28
15056673052peripheral nervous system-transmits info to and from CNS -neurons that connect the CNS with the rest of the body -all the rest of the nerves29
15056680195somatic nervous systemcontrols voluntary movements30
15056686623autonomic nervous systemcontrols glands and muscles of internal organs that operate involuntarily31
15056689183Sypathetic Nervous Systemfight or flight -mobilizes body for action and energy output32
15056691542parasympathetic nervous systemrest and digest -conserves energy, maintains quiet state33
15056695861Nervesneural "cables" containing many axons. These bundled axons, which are part of the peripheral nervous system, connect the central nervous system with muscles, glands, and sense organs34
15056698921reflexautomatic response to a sensory stimulus -single sensory, motor, and interneuron -does not involve brain35
15056702488endocrine systembody's chemical messenger system that secrets hormones into the bloodstream36
15056704687hormones-chemical messengers used by endocrine system -move slower than NTMs -last longer -move through bloodstream37
15056707811adrenal glands-secretes hormones in reaction to stress -activates sympathetic nervous system with adrenaline38
15056716942Epinephrineadrenaline, released by stress39
15056717369fight or flight responsethe initial reaction of the body to stress during the alarm stage40
15056720044pituitary gland-master gland -most important -controls all responses of the endocrine system41
15056725474Phineas Gagerailroad 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 function42
15056730555lesiontissue destruction. A brain lesion is a naturally or experimentally caused destruction of brain tissue43
15056733945EEG-a single line that charts your brain activity of billions of neurons -detects rapid changes in electrical activity -can isolate left vs right brain activity but can't pinpoint exact location (electroencephalography and electroencephalogram)44
15056733946CT scan-x ray images of brain -swelling, bleeding, brain tumors (computed tomography)45
15056734784PET scan-red hot spots show which brain areas are most active as person performs tasks -person receives temporarily radioactive glucose (positron emission tomography)46
15056734785MRImagnetic imaging of soft tissue (magnetic resonance imaging)47
15056734786fMRI-detects blood rushing to back of the brain -how the brain divides its labor48
15056736000Brainstemresponsible for vital autonomic functions -oldest part of the brain49
15056736001medullapart of brain that regulates basic body functions including breathing, blood pressure, heart rate50
15056736002ponsrelay signals to cerebellum to coordinate movements -sleep, breathing, posture and balance, bladder control, etc. -bridge connects cerebellum to cerebrum (2 hemispheres)51
15056736529thalamusthe brain's sensory switchboard -it directs all incoming and outgoing sensory and motor traffic except smell52
15056736530reticular formationbundle of nerve cells that runs through the brain stem -controls arousal of the brain -will lead to INSTANT COMA if severed53
15056737520cerebellumcoordination and balance -little brain -all physical movement54
15056737521limbic systemgive humans the capability for emotions and memory -associated with emotions such as fear, aggression, and drives of hunger and sex -HAH (Hippocampus, Amygdala, Hypothalamus)55
15056737526amygdalafear and aggression -enhances memory of emotional information -flashbulb memories56
15056738496Hypothalamusbody maintenance -boss of pituitary gland -homeostasis, sleep regulation, pleasure center57
15056738497Hippocampuscontrols ability to create new memories -not where memories are stored! -helps connect emotions and senses to memories -flashbulb memories58
15056810224cerebral cortexbrains ultimate information processing center -tightly packed neurons -higher thought, communication59
15056810225frontal lobeshas motor cortex -movement -reasoning, planning, judgement60
15056810226prefrontal cortexcortex that involves attention, working memory, decision making, appropriate social behavior, and personality61
15056811342motor cortexcortex that processes information about voluntary movement62
15056811343parietal lobeshas the somato(sensory) cortex -sense of touch -mathematical reasoning63
15056812818sensory cortexcortex that registers and processes body touch and movement sensations64
15056814650occipital lobeshas the visual cortex -visual functions -eyes in the back of your head65
15056815812visual cortexcortex that processes visual info66
15056819077temporal lobeshas auditory cortex -hearing but also involved in speech -by the ears -contains hippocampus, so involved in memory formation67
15056819078auditory cortexcortex that processes sound information68
15056820147association areasresponsible for functions outside of what is specifically assigned (learning, memory, decision-making)69
15056820818Plasticitythe brain's ability to change, especially during childhood, by reorganizing after damage or by building new pathways based on experience70
15056820819neurogenesisability of brain to generate more neurons71
15056822270aphasiaimpairment of language72
15056822271Broca's areaability to speak -left frontal lobe73
15056822272Wernicke's arealanguage comprehension -left temporal lobe -can speak but often meaningless words74
15056823487corpus callosumnerve fibers that connect the two hemispheres of the brain75
15056823488split brain proceduresevering the corpus callosum -epilepsy76
15056824132brain lateralizationspecialization of function in each hemisphere77
15056824615consciousnessour awareness of ourselves and our environment78
15056824616cognitive neuroscienceA field that attempts to understand the links between cognitive processes and brain activity.79
15056825517dual processingprinciple that info is often simultaneously processed on separate conscious and unconscious tracks80
15056825518behavior geneticsstudy of influence of genetics and environment on our behavior81
15056826162environmentculture, edu, nutrition, parent/peer influence82
15056826163chromosomesmade of DNA, contains genes -located in nucleus -we have 2383
15056826931DNAholds our unique genetic characteristics84
15056826932genesour codes for life -specific human traits -dominant or recessive -environmental impacts can turn on impact of genes85
15056826933genomecomplete sent of DNA, including genes -info needed to build and maintain organism86
15056827593identical twins (monozygotic twins)twins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms87
15056827594fraternal twins (dizygotic)twins who develop from separate fertilized eggs; no genetically closer than brothers and sisters, but they share a fetal environment88
15056829948Heritabilityhow much the differences between people are result of genes89
15056829949interactioneffect of the environment depends on the presence of genes that influence traits -switch must be turned on90
15056830433molecular geneticsstudies structure and function of specific genes that influence behavior or cause disease/disorders91
15056830434Epigeneticsstudy of environmental factors that influence genes turning on and off92
15056831491evolutionary psychologystudies origins of behavior and mental processes -adaptive or survival value93
15056831492natural selectionsurvival of the fittest -adaptive traits are passed on to ongoing generations to help survival and reproduction94
15056832177Mutationerror in gene replication that changes DNA95
15056832178social scriptsculturally modeled guide for how to act in various situations96

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