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24 Cards in this Set
- Front
- Back
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Nervous System |
The body’s electrochemical communication circuitry. |
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Division of the Nervous System: Central Nervous System |
Brain and Spinal Cord |
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Division of the Nervous System: Peripheral Nervous System |
Brings info to and from CNS |
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Division of the Nervous System: Somatic Nervous System |
Sensory and Motor Nerves |
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Division of the Nervous System: Autonomic Nervous System |
Internal Organs |
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Neurons |
(One of two types of cells in the nervous system) Handle the information-processing functions |
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Cell Body |
Nucleus |
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Dendrites |
Receiveinformation and orient it toward the neuron’s cell body |
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Axon |
Carries information away from the cell body toward other cells through the terminal buttons. |
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Myelin Sheath |
A layer of fat cells that insulates most axons speeding up transmission of nerve impulses. |
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Glial Cells |
-Provide support and nutritional benefits -Keep neurons running smooth |
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Neural Impulse |
Each neuron sends brief electrical impulses throughits axon to the next neuron. |
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Synapses |
Tiny spaces between neurons; the gap between neurons are called synaptic gap. |
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Neurotransmitters |
Chemical substances that transmit or carry information across the synaptic gap to the next neuron. |
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Acetylcholine |
Involved in muscle action, learning and memory |
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GABA (Gamma Aminobutyric Acid) |
It is the brain’s brake pedal; it keeps many neurons from firing |
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Glutamate |
It’s involved in learning and memory |
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Norepinephrine |
It helps to control alertness |
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Dopamine |
- It helps to control voluntary movement - It affects sleep, mood, attention, learning, and the ability to recognize opportunities for rewarding experiences in the environment |
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Serotonin |
It is involved in the regulation of sleep, mood, attention and learning |
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Endorphins |
t shields the body from pain and elevate feelings of pleasure |
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Oxytocin |
It plays an important role in the experience of love and social bonding |
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Agonist |
A drug that mimics or increases a neurotransmitter’s effect. Example: Morphine |
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Antagonist |
A drug that blocks a neurotransmitter’s effect. Example: Botox |
