Term
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Definition
| The body's speedy, electrochemical communication network, consisting of all the nerve cells of the peripheral and central nervous systems. |
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Term
| Central nervous system(CNS) |
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Definition
| The brain and spinal cord. |
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Term
| Peripheral nervous system(PNS) |
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Definition
| The sensory and motor neurons that connect the central nervous system(CNS) to the rest of the body. |
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Term
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Definition
| Bundled axons that form neural cables connecting the central nervous system with muscles, glands, and sensory organs. |
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Term
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Definition
| Neurons that carry incoming information from the body's tissue and sensory receptors to the brain and spinal cord. |
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Term
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Definition
| Neurons that carry outgoing information from the brain and spinal cord to the muscles and glands. |
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Term
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Definition
| Neurons within the brain and spinal; They communicate internally and process information between the sensory inputs and motor outputs. |
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Term
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Definition
| The division of the peripheral nervous system that controls the body's skeletal muscles. Also called the skeletal nervous system. |
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Term
| Autonomic nervous system(ANS) |
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Definition
| The part of the peripheral nervous system that controls the glands and the muscles of the internal organs(such as the heart). Its sympathetic division arouses; its parasympathetic division claims. |
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Term
| Sympathetic nervous system |
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Definition
| The division of the autonomic nervous system that arouses the body, mobilizing its energy. |
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Term
| Parasympathetic nervous system |
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Definition
| The division of the autonomic nervous system that calms the body, conserving its energy. |
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Term
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Definition
| A simple, automatic response to a sensory stimulus, such as the knee-jerk reflex. |
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Term
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Definition
| A nerve cell; the basic building block of the nervous system. |
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Term
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Definition
| The part of a neuron that contains the nucleus; the cell's life-support center. |
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Term
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Definition
| A neuron's often bushy, branching extensions that receive and integrate messages, conducting impulses toward the cell body. |
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Term
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Definition
| The segmented neuron extensions that passes messages through its branches to other neurons or to muscles or glands. |
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