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| supporting cells that separate and protect neurons, act as phagocytes, regulate composition of interstitial fluid (many more neuroglia than neurons) |
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| all neural tissue outside CNS |
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| peripheral nervous system |
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| controls skeletal muscle contractions (voluntary and involuntary-reflex) |
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| provides automatic regulation of smooth and cardiac muscle and glandular secretions |
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| What work antagonistically inside the autonomic nervous system? |
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| sympathetic and parasympathetic division |
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| what has one axon and many dendrites? |
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| slender processes extending out from cell body |
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| portion of brain involved with memory storage |
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| specialized site where the neuron communicates with another cell with use of chemical called neurotransmitters |
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| surrounds brain and spinal cord and passageway that extends along longitudinal axis of spinal cord and brain |
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| What does cerebrospinal fluid transport after it circulates and provides a protective cushion? |
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| dissolved gases, nutrients, wastes and other materials |
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| largest and most numerous neuroglia in CNS |
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| What are the most important neurotransmitters? |
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| dopamine, serotonin, gamma aminobutyric acids, acetylcholine |
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| released in many areas of brain and may inhibit muscle motion to provide precise control of our movements |
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| inadequate production with widespread effects on a person's attention and emotional state and may lead to chronic, severe depression |
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| generally has an inhibitory effect, its release appears to reduce anxiety (anti anxiety drugs enhance its effect) |
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| most widespread neurotransmitter released, affects skeletal muscle, affects neuron to neon transmission, neuromuscular and neuroglandular functions, etc |
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| What drug target serotonin receptors? |
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| What have receptor abnormalities involving dopamine been linked to? |
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| What happens if neurons that produce dopamine are damaged or destroyed? |
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| Parkinson's Disease with righty and stiffness of muscles |
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| What inhibits removal of dopamine from synapses, and this rise in dopamine causes the high? |
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| What are the four classes of opioids? |
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| endorphins, enkephalins, endomorphins, and dynorphins |
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| What are the primary functions of opioids? |
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| relief of pain by inhibiting release of neurotransmitter substance P at synapses that rely pain sensations ("happy" chemicals and in house pain killers) |
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