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30 Cards in this Set
- Front
- Back
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Central Nervous System (CNS)
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Includes brain and spinal cord, processes information
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Peripheral Nervous System (PNS)
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Includes rest of the nervous system tissue
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Nerve
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Bundle of neurons surrounded by connective tissue
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Stimulus
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Environmental change that triggers a response
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Sensory Receptors
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Specialized cells which detect most stimuli
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Sensory Neurons
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Detect some stimuli such as pain
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Interneurons
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Neurons in the CNS whcih interpret information
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Motor Neurons
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Carries away response from CNS
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Reflex
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Response that is rapid and automatic
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Dendrites
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Receive signals and carry them toward the cell body
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Axon
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Carries the signals away from the cell body and toward other cells
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Myelin Sheath
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Thick coat of material which cover axons
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Nodes
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Uncovered spaces
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Resting Potential
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Inside of the nerve cell is negative in electrical chare compared to the outside
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Deplorization
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Inside of the cell becomes positive compared to the outside
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Threshold
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Neuron stimulation at a certain level
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Action Potential
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Stonger deplorization
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Synapse
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Place where one neuron meets another
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Synaptic Cleft
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A tiny space between the neurons in a chemical synapse where the action potential is changed
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Neurotransmitters
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Molecules that make up the chemical signal
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Stomatic Nervous System
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Carries signals from the CNS to skeletal muscles
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Autonomic Nervous System
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Carries signals from the CNS to organs and glands
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Sympathetic Division
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Increases level of activity in the body (in Automic Nervous System)
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Parasympathetic Divison
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Calms the body and returns it to regular functions
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Cerebrum
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Largest and most complex part of brain
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Corpus Callosum
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Thick band of nerve fibers which connect the two hemispheres
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Cerebral Cortex
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Outside part of the cerebrum
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Cerebellum
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Cooridnates body movements
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Brainstem
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Filters all the sensory and motor information traveling to and from the brain
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Thalamus
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Filters information traveling to and from the cerebral cortex
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