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AP Psychology Chapter 3 Flashcards

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8282735438biological psychologya branch of psychology concerned with the links between biology and behavior0
8282735439neurona nerve cell; the basic building block of the nervous system1
8282735440sensory neuronsneurons that carry incoming information from the sensory receptors to the brain and spinal cord2
8282735441motor neuronsneurons that carry outgoing information from the brain and spinal cord to the muscles and the glands3
8282735442interneuronsneurons within the brain and spinal cord that communicated internally and intervene between the sensory inputs and motor outputs4
8282735443dendritethe bush, branching extensions of a neuron that receive messages and conduct impulses toward the cell body5
8282735444axonthe extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles or glands6
8282735445myelin sheatha layer of fatty tissue segmentally encasing the fibers of many neurons; enables vastly grater transmission speed of neural impulses as the impulse hops from one node to the next7
8282735446action potentiala neural impulse; a brief electrical charge that travels down an axon8
8282735447cell bodythe cell's life-support center9
8282735448terminal branches of axonform junctions with other cells10
8282735449thresholdthe level of stimulation required to trigger a neural impulse11
8282735450synapsethe junction between the axon tip of the sending neuron and he dendrite or cell body of the receiving neuron12
8282735451reuptakea neurotransmitter's re-absorption by the sending neuron13
8282735452endorphins"morphine within"--natural, opiate-like neurotransmitters linked to pain control and to pleasure14
8282735453AChneurotransmitter that enables muscle action, learning, and memory15
8282735454ACh producing neuronsAlzheimer's disease - associated with a deterioration of . . . ?16
8282735455Dopamineneurotransmitter that influences movement, learning, attention, and emotion17
8282735456dopamine receptorschizophrenia is associated with an excess of this neurotransmitter's receptors18
8282735457dopamineunder-supply associated brain produced tremors and decreased mobility associated with Parkinson's disease19
8282735458serotoninneurotransmitter that affects mood, hunger, sleep, and arousal20
8282735459serotoninunder-supply associated with depression, Prozac raises level21
8282735460Norepinephrineneurotransmitter that helps control alertness and arousal22
8282735461GABAa major inhibitory neurotransmitter23
8282735462glutamatea major excitatory neurotransmitter; involved in memory24
8282735463GABAunder-supply linked to seizures, tremors, and insomnia25
8282735464glutamateexcess can overstimulate brain, producing migraines or seizures26
8282735465agonistmolecule similar enough to a neurotransmitter to bind to its receptor and mimic its effects27
8282735466antagonistmolecule similar enough to a neurotransmitter to bind to its receptor and block the neurotransmitter's functioning28
8282735467nervous systemthe body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems29
8282735468central nervous systemthe brain and spinal cord30
8282735469peripheral nervous systemthe sensory and motor neurons that connect the central nervous system to the rest of the body31
8282735470nervesbundled axons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs32
8282735471somatic nervous systemthe division of the peripheral nervous system that controls the voluntary movements of skeletal muscles33
8282735472autonomic nervous systempart of the peripheral nervous system that controls the glands and the muscles of the internal organs.34
8282735473sympathetic nervous systemthe division of the autonomic nervous system that arouses the body, mobilizing its energy in stressful situations35
8282735474parasympathetic nervous systemthe division of the autonomic nervous system that calms the body, conserving its energy36
8282735475reflexa simple, automatic response to a sensory stimulus, such as the knee-jerk response37
8282735476endocrine systemthe body's "slow" chemical communication system; a set of glands that secrete hormones into the bloodstream38
8282735477hormoneschemical messengers that are manufactured by the endocrine, travel through the bloodstream, and affect other tissues39
8282735478adrenal glandsa part of endocrine glands that sit just above the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress40
8282735479pituitary glandsthe endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands41
8282735480lesiontissue destruction; in the brain, a naturally or experimental caused destruction of brain tissue42
8282735481EEGan amplified recording of the waves of electrical activity that sweep across the brain's surface. These waves are measured by electrodes placed on the scalp43
8282735482CT scana series of x-ray photographs taken from different angles and combined by computer into a composite representation of a slice through the body44
8282735483PET scana visual display of brain activity that detects where a radioactive form of glucose goes while the brain performs a given task45
8282735484MRIa technique that uses magnetic fields and radio waves to produce computer generated images of soft tissues. Scans show brain anatomy46
8282735485fMRIa technique for revealing blood flow and, therefore, brain activity by comparing successive MRI scans. Scans show brain function.47
8282735486brainstemthe oldest part and central core of the brain, beginning where the spinal cord swells as it enters the skull. Responsible for automatic survival functions48
8282735487medullathe base of the brainstem; controls heartbeat and breathing49
8282735488ponspart of the brainstem, above the medulla, that helps coordinate movements50
8282735489reticular formationa nerve network in the brainstem that plays an important role in controlling arousal51
8282735490thalamusthe brain's sensory switchboard; located on top of the brainstem; it directs messages to the sensory receiving areas in the cortex and transmits replies to the cerebellum and medulla52
8282735491cerebellumthe "little brain" at the rear of the brainstem; functions include processing sensory input and coordinating movement output and balance53
8282735492limbic systemthe overall system of the brain that regulates emotions and controls behavior. Includes the Hippocampus, amygdala, hypothalamus, and other structures. Donut-shaped neural system located below the cerebral hemisphere; associated with emotions and drives54
8282735493amygdalatwo lima bean-sized neural clusters in the limbic system; linked to emotion55
8282735494hypothalamusa neural structure lying below the thalamus; it directs several body maintenance activities (eating, drinking, body temperature), helps govern the endocrine system via the pituitary gland, and is linked to emotion and reward56
8282735495cerebral cortexthe intricate fabric of interconnected neural cells covering the cerebral hemispheres; the body's ultimate control and information processing center57
8282735496glial cellscells in the nervous system that support, nourish, and protect neurons`58
8282735497frontal lobesportion of the cerebral cortex lying just behind the forehead; involved in speaking and muscle movements and in making plans and judgments59
8282735498parietal lobesportion of the cerebral cortex lying at the top of the head and toward the rear; receives sensory input for touch and body position60
8282735499occipital lobesportion of the cerebral cortex lying at the back of the head; includes areas that receive information primarily from the opposite ear61
8282735500temporal lobesportion of the cerebral cortex lying roughly above the ears; includes areas that receive information from the visual fields62
8282735501motor cortexan area at the rear of the frontal lobes that controls voluntary movements63
8282735502sensory cortexan area at the front of the parietal lobes that registers and processes body touch and movement sensations64
8282735503association areaareas of the cerebral cortex that are not involved in primary motor or sensory functions; rather they are involved in higher mental functions such as learning, remembering, thinking, and speaking65
8282735504aphasiaimpairment of language, usually caused by left hemisphere damage either to Broca's area (impairing speaking) or to Wernicke's area (impairing understanding)66
8282735505Wernicke's areacontrols language reception--a brain area involved in language comprehension and expression; usually in the left temporal lobe67
8282735506Broca's areacontrols language reception--a brain area involved in language comprehension and expression; usually in the left temporal lobe68
8282735507angular gyrusbrain area involved in reading outloud by transforming visual representations into an auditory code69
8282735508visual cortexreceives written words as visual cortex70
8282735509plasticitythe brain's ability to change, especially during childhood, by reorganizing after damage or by building new pathways based on experience71
8282735510neurogenesisthe formation of new neurons72
8282735511corpus callosumthe large bind of neural fibers connecting the two brain hemispheres and carrying messages between them73
8282735512split braina condition resulting from surgery that isolates the brain's two hemispheres by cutting the fibers (mainly those of the corpus callosum) connecting them74
8282735513consciousnessour awareness of ourselves and our environment75
8282735514cognitive neurosciencethe interdisciplinary study of the brain activity linked with cognition (including perception, thinking, memory, and language)76
8282735515dual processingthe principle that information is often simultaneously processed on separate conscious and unconscious tracks77
8282735516behavior geneticsthe study of the relative power and limits of genetic and environmental influences on behavior78
8282735517environmentevery non-genetic influence, from prenatal nutrition to the people and things around us79
8282735518chromosomesthreadlike structures made of DNA molecules that contain the genes80
8282735519DNAa complex molecular containing the genetic information that makes up the chromosomes81
8282735520genesthe biochemical units of heredity that make up the chromosomes; segments of DNA capable of synthesizing a protein82
8282735521genomethe complete instructions for making an organism, consisting of all the genetic material in that organism's chromosomes83
8282735522identical twinstwins who develop from a single fertilized egg that splits in two, creating two genetically identical organisms84
8282735523fraternal twinstwins who develop from separate fertilized eggs. They are genetically no closer than brothers and sisters, but they share a fetal environment85
8282735524heritabilitythe proportion of variation among individuals that we can attribute to genes. The irritability of a trait may vary, depending on the range of populations and environments studied86
8282735525interactionthe interplay that occurs when the effect of one factor (such as environment) depends on another factor (such as heredity)87
8282735526molecular geneticsthe subfield of biology that studies the molecular structure and function of genes88
8282735527evolutionary psychologythe study of the evolution of behavior and the mind, using principles of natural selection89
8282735528natural selectionthe principle that, among the range of inherited trait variations, those that lead to increased reproduction and survival will most likely be passed on to succeeding generations90
8282735529mutationa random error in gene replication that leads to a change91

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