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16 Cards in this Set
- Front
- Back
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Central Nervous System (CNS)
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The brain and spinal chord. Integrates and coordinates what info goes in/out
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Peripheral Nervous System (PNS)
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That portion of the nervous system that lies outside the brain and spinal cord; includes nerves, ganglia, enteric neurons, and sensory receptors.
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Nerve
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A rope-like bundle of neurons fiber (axon and dendrites). Many neurons
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Connective Tissue
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Surrounds the nerves and protects them.
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Neuron
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Cells of the nervous system specialized to generate and transmit electrical signals. Basic Unit of nervous system cells of the nervous system.
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Sensory Input
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Neurons that sense stimuli and report back to the central nervous system. (____ neurons which use the 5 senses).
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Integration/Interneuron/Innervate
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To make a synaptic connection with an effector organ. (Analyze and interpret)
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Motor Neuron
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A single nerve cell that extends from the brain or spinal cord to a muscle or gland and carries movement instructions to muscle. An efferent neuron.
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Ganglia
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Clusters of neuronal cell bodies-outside CNS
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Effector
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Tissues or organs that are controlled by nervous system components; means for the control center's response (output) to the stimulus.
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Resting Potential
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Voltage difference (- inside, +outside) that exists across the plasma membrane where the gates are closed not allowing Na+ to go in, and K+ to go out.
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Depolarization/Threshold
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A change in membrane potential where inside becomes more positive compared to the outside.
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Impulse
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Electrical currents that run down/across neurons; action potential.
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Synapse
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Where neurons nearly touch other neurons, muscles, or glands to communicate
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Neurotransmitter
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The chemical messengers that get released from neurons that "talk" to other tissues. The thing that sends the info between the neurons
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Two endocrine system glands associated with the brain
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Pituitary Gland, Pineal Gland
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