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AP Psychology Unit 3 Flashcards

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7791519939SomaCell body of neuron, contains nucleus0
7791521151AxonConducting wire of neuron, Na-K pumps Coated by myelin sheath, nodes of ranvier1
7791539804DendritesReceives signals from neighboring neurons Branch-like structure from soma2
7791543401Receptor sitesSpecial places on dendrites where neurotransmitters attach3
7791551485Myelin sheathFatty layer that coats axon Insulation for electrical signals4
7826852773Axon terminalEnd of neuron/axon Electric signal is converted into chemical signals5
7826883885Nodes of RanvierSpaces between the myelin sheath6
7826902417SynapseThe space between the ending of an axon terminal of one neuron and the dendrite of another7
7826928162Positive vs. Negative ionsSodium (Na) vs Potassium (K) Both are positive ions, but the inside of the neuron is very negative, so bringing in Na makes it positive8
7827164962SodiumThe "Positive ion" Rushes into neuron to cause electric signal9
7827193405PotassiumThe "Negative ion" Rushes out of neuron to cause electric signal10
7827201798All or nothing principleA neuron fires at the same strength every time If threshold met, neuron fires If threshold not me, nothing11
7827208555Absolute thresholdthe smallest amount of energy required by an external stimulus to be detected12
7827235562Resting potentialMore negative ions inside than outside neuron Neuron NOT transmitting information Neuron is *polarized*13
7827247331Action potentialElectric impulse travels down the axon Fires when threshold met More positive ions inside than outside neuron Neuron *depolarizes*14
7827259373Depolarizationsodium gates open and let sodium into the axon, causing the axon to be more positive that the outside15
7827267422Repolarizationpotassium gates open and positive ions flow out of the axon, causing the inside of the axon to be more negative than the outside16
7827271366Refractory periodPeriod after action potential when action potential cannot occur Neuron trying to reach resting potential17
7827282627ReuptakeAfter neurotransmitters reach receptors on synapse, they return to the axon terminal through the reuptake valve18
7827297723Neurotransmitterschemical messengers that cross the synaptic gap between neurons. they bind to receptor sites on receiving neurons19
7827302737Electrical vs. chemical signalsInside neuron - electrical In between neurons - chemical20
7827311933Afferent (receptor/sensory) neuronsTake sensory information to the brain21
7827318212Efferent (effector/motor) neuronsTake neuronal information from brain to muscles22
7827320805InterneuronsConnect efferent and afferent neurons23
7827331725ReflexAn automatic response to sensory stimulus24
7827334488Central nervous systemcomposed of the brain and spinal cord25
7827342088Peripheral nervous systemThe sensory and motor neurons that connect to the rest of the body26
7827352628Somatic nervous systemPeripheral Controls voluntary control of skeletal muscles27
7827361234Autonomic nervous systemPeripheral Controls unconscious behaviors (heartbeat)28
7827370445Sympathetic nervous systemPeripheral, autonomic "Flight or fight" response increases heart rate, pupils dilate, digestion stops29
7827385175Parasympathetic nervous systemPeripheral, autonomic "rest and digest" Heart rate decreases, pupils constrict, digestion occurs30
7827407450Magnetic Resonance Image (MRI)Most detailed picture of the brain structures31
7827411743Functional Magnetic Resonance Image (FMRI)Most detailed picture of the brain structures and metabolic processes32
7827414881Electroencephalography (EEG)Detects bursts of neural activity used for seizures, fainting, and sleep33
7827435063Computed axial tomography (CAT scan)Gives basic picture of brain34
7827443029Position emission tomography (PET scan)Uses glucose dye to detect brain functioning35
7827456531Acetylcholine (ACh)Activating muscles, autonomic, short term memory Shortage: Alzheimer's disease36
7827466785DopamineEngaged somatic nervous system Shortage: Parkinson's disease Excessive: Schizophrenia37
7827485575NorepinephrineMood38
7827495163SerotoninMood39
7827488120EpinephrineAdeline, flight or fight40
7827504464GABAInhibitory neurotransmitter, calms neural activity41
7827518050Endorphinsnatural neurotransmitters linked to pain control and pleasure42
7827533318Frontal LobeSomatic movement, speech, reason, judgement Prefrontal cortex & Motor cortex43
7827549103Pariental LobeSensation, spacial intelligence Sensory cortex44
7827556408Temporal LobeProcessing auditory stimuli and home of language center Auditory cortex45
7827564452Occipital LobeProcessing of visual stimuli Visual cortex46
7827571406Brain stemConnects to the spine Medulla Pons Cerebellum Reticular formation Thalamus47
7827579488Motor cortexAn area at the rear of the frontal lobe that controls voluntary movements48
7827579489Sensory cortexArea at the front of the parietal lobe that registers and processes body touch and movement sensations.49
7833299599Auditory cortexThe cortex of the brain in the temporal lobe that is responsible for processing auditory information50
7833299600Visual cortexthe cortex of the brain in the occipital lobe where visual information goes51
7833310747Prefrontal cortexPart of frontal lobe responsible for thinking, planning, and language52
7833317189MedullaAutonomic nervous system53
7833325050PonsLevels of consciousness54
7833327313CerebellumVoluntary movement and balance55
7833331141Reticular formationArousal (respond to environment) Broken = Comatose56
7833337694ThalamusProcesses all sensory information into brain except smell57
7833349437Limbic systemSurvival Memory storage and assessment Thalamus Hypothalamus Amygdala Hippocampus Neurotransmitter58
7833374750HypothalamusRegulates hunger, thirst, body temperature, and pituitary gland59
7833384185Ventromedial hypothalamusFeeling full60
7833385581Lateral hypothalamusFeeling hungry61
7833389427AmygdalaBasic emotional response origin of "flight or fight"62
7833408240HippocampusConnecting new information for memory storage and retrieval63
7833459322Language centersBroca's area, Wernicke's area, Angular gyrus64
7833461112Broca's areaCreation of auditable speech from conscious thought65
7833464543Wernicke's areaResponsible for turning auditory stimuli into discernible language66
7833471946Angular gyrusResponsible for turning visual stimuli into discernible language67
7833476425AphasiaLoss of linguistic ability68
7833480827Broca's/Expressive aphasiaCannot speak complete sentences69
7833483825Wernicke's/receptive aphasiaCannot understand speech70
7900506851ChromosomeStrands of DNA within a cell71
7900509012DNACarries genetic information72
7900513637DiathesisGenetic predisposition passed down to the child73
7900519879TeratogenEnvironmental stimuli or condition that could affect the normal growth of the child74
7900528468PhenotypePhysical trait that is displayed75
7900530460GenotypeTwo alleles for a trait76
7900534161KerotypingA test to identify and evaluate the size, shape, and number of chromosomes in a sample of body cells77
7900539840HeritabilityThe proportion of variation among individuals that we can attribute to genes. the heritability of a trait may vary, depending on the range of populations and environments studied78
7900544646TemperamentA person's characteristic emotional reactivity and intensity79
7900556088Phenylketonuria (PKU)Body cannot break down amino acids80
7900567661Down Syndrome21 Trisomy Physical and mental abnormalities81
7900585104Turner's SyndromeOnly 1 X on 23rd pair Physical and mental abnormalities Infertile82
7900592943Klinefelter's SyndromeXXY Androgynous with some mental abnormalities83
7900623837HomosexualitySomeone who is attracted to someone of the same gender There are various theories of whether it is is genetic, environmental, or physical abnormalities cause this or it is simply natural84
7900670237Monozygotic twinsIdentical twins85
7900673323Dizygotic twinsFraternal twins86
7900675677Minnesota twin studyLongitudinal study Claimed that monozygotic twins are more similar than dizygotic = nature > nurture87
7900686381Gender roleOne's sense of what it means to be a male/female88
7900687975Gender identityOne's sense of being a male or female89
7900694732Gender typingThe process by which a child becomes aware of their gender and thus behaves accordingly by adopting values and attributes of members of the sex that they identify as their own.90
7900699909Social learning explanationPeople act based on observation and imitation91
7900711089Gender-Schema theoryThe theory that children learn from their cultures a concept of what it means to be male and female and that they adjust their behavior accordingly92

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