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13 Cards in this Set
- Front
- Back
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CNS |
the part of the nervous system that consists of the brain and spinal cord
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peripheral nervous system |
the neurons that connect the central nervous system to the rest of the body, including the muscles and glands |
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Neurons |
A nerve cell; the basic building block of the nervous system |
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Cell Body |
the part of a neuron that produces the energy needed for the activity of the cell |
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Dendrites |
the branchlike extensions of a neuron that receive impulses and conduct them toward the cell body |
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Axon |
a long tube like structure attached to a neuron that transmits impulses away from the neuron cell body |
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Myelin |
a white, fatty substance that insulates axons and enables rapid transmission of neural impulses |
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Axon Terminals |
small fibers branching out from an axon |
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Synapse |
the junction between the axon terminals of the sending neuron and the dendrites of the receiving neuron |
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Neurotransmitters |
a chemical messenger that carries impulses across the synaptic gaps between neurons
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Spinal Cord |
a column of nerves within the spine that transmits messages to and from the brain |
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Somatic Nervous System |
the division of the peripheral nervous system that connects the central nervous system with sensory receptors, muscles, and the skin |
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Autonomic Nervous System |
the subdivision of the peripheral nervous system that regulates body functions, such as respiration and digestion |
