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 the 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 to the rest of the body |
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Term
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Definition
| Bundles neurons that form neural "cables" connecting the central nervous system with muscles, glands, and sense organs. |
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Term
| Sensory (afferent) neurons |
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Definition
| Neurons that carry incoming information from the 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 cord that communicate internally and intervene 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
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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, the parasympathetic division calms |
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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 the energy in stressful situations |
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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, autonomic response to a sensory stimulus, such as the knee-jerk response |
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Term
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Definition
| The body's "slow" chemical communication system, a set of glands that secrete hormones into the bloodstream |
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Term
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Definition
| Chemical messengers that are manufactures by the Endocrine gland, travel through the bloodstream, and affect other tissues |
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Term
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Definition
| A pair of endocrine glands that sit just aboe the kidneys and secrete hormones (epinephrine and norepinephrine) that help arouse the body in times of stress |
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Term
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Definition
| The endocrine system's most influential gland. Under the influence of the hypothalamus, the pituitary regulates growth and controls other endocrine glands |
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Term
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Definition
| A two-way information highway connecting the brain to the peripheral nerves |
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