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14 Cards in this Set
- Front
- Back
A tube-like structure that propagates a signal from a nueron's cell body to axon terminals. |
Axon |
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The structures extend away from the neuron cell body; receives messages. |
Dendrites |
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A change in the membrane potential to a negative less value. |
Depolarization |
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______________, are glial cells that create myelin she's the around axons in the peripheral nervous system. |
Schwann cells |
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Specialized cells that can receive and transmit electrical and chemical signals. |
Nuerons |
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Gaps in the myelin sheath, where the neural signal id's recharged. |
Nodes of Ranvier |
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A neurotransmitter released by neurons in the central nervous system and peripheral nervous system. |
Acetylcholine |
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A self-propagating momentary change in the electrical potential of a neuron our muscle cell membrane. |
Action potential |
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Which cation has the highest concentration in the extracellular fluids of cells? |
Sodium |
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Which cation has the highest concentration in the intracellular fluids of cells? |
Potassium |
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The awareness (sense) about how parts of the body are oriented in space. |
Procioception |
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The junction between two neurons; where neuronal signals are communicated. |
Synapse |
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The _________ are cavities in the brain that contains the cerebrospinal fluid. |
ventricles |
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A division of the autonomic nervous system activated during stressful "fight or flight" situations. |
Sympathetic nervous system |