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Unit 3A Psychology

Unit 3A Information

QuestionAnswer
What is Biological Psychology? A branch of psychology interested in the links of behavior and biology
What is a Neuron? A nerve cell; the basic building block of the nervous system
What is a sensory neuron? A neuron that carries incoming information from the sensory receptors to the brain and spinal cord.
What is a motor neuron? A neuron that carries outgoing information from the brain and spinal cord to the muscles and glands
What are interneurons? Neurons within the brain and spinal cord that communicate internally and intervene between the sensory inputs and motor inputs.
What is a dendrite? The bushy, branching, extensions of a neuron that receive messages and conduct impulses toward the cell body.
What is the axon? The extension of a neuron, ending in branching terminal fibers, through which messages pass to other neurons or to muscles and glands.
What is the Myelin Sheath? A layer of fatty tissue that insulates the neurons' axons and helps speed their impulses.
What is Action Potential? A neural impulse: a brief electrical charge that travels down an axon.
What is a threshold? The level of stimulation needed to trigger a neural impulse.
What is Phrenology? The popular but ill-fated theory that claimed bumps on the skull could reveal our mental abilities and our character traits.
What is a synapse? The junction between the axon tip of the sending neuron and the dendrite/cell body of the receiving neuron.
What are neurotransmitters? Chemical messengers that cross the synaptic gaps between neurons.
What is a reuptake? A neurotransmitter's reabsorption by the sending neuron.
Created by: lizalove818
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