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AP Psychology Chapter 2

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31924409Biological PsychologyThe study between the physical body and how it effects emotions
31924410NeuronA nerve cell; Basic building block
31924411DendriteThe bushy,branching extensions of a neuron that receive messages
31924412AxonThe extension of a neuron ending in branches terminal fibers.
31924413Myelin SheathA layer of fatty tissue segment ally encasing the fibers of many neurons
31924414Action PotentialNeural Impulse
31924415ThresholdThe level of stimulation required to trigger a neural impulse
31924416SynapseThe gap between the axon tip to the next dendrite of the the receiving cell body
31924417NeurotransmittersChemical messengers that traverse the synaptic gap between nuerons
31924418AcetylcholineA neurotransmitter that among its other functions triggers muscle contractions
31924419EndorphinsMorphine within
31924420Nervous SystemThe body's speedy,electrocommunication system
31924421Central Nervous SystemThe brain and spinal cord
31924422Peripheral Nervous SystemThe sensory and motor meurons
31924423NervesLong strands of axon fibers very sensitive
31924424Sensory NeuronsNeurons that carry incoming info from the sensory receptors to the CNS
31924425InterneuronsCNS Neurons that comm between sensory and Motor Neurons
31924426Motor NeuronsNeurons that carry outgoing info from the CNS
31924427Somatic Nervous SystemDivision of the peripheral nervous system that controls the bodies skeletal muscles
31924428Autonomic Nervous System(ANS)Part of the Peripheral Nervous System that contains muscles and glands
31924429Sympathetic Nervous SystemDivision of the ANS that arouses the body
31924430Parasympathetic Nervous systemDivision of the ANS that calms the body
31924431ReflexSensory neurons---> Internuerons---> Motor Neurons
31924432Neural Networksclusters of neurons to form a network of cells
31924433LesionDead part of brain tissue either naturally of by force for study
31924434ElectroencephalogramElectrical activity of the brain scan
31924435Computed Tomography scanX-raying of the brain
31924436Positron Emission TomographyVisual display of brain activity that detects radioactive glucose in the brain

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