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| the first neurotransmitter discovered in the PNS and CNS; activates skeletal muscles in the somatic nervous system and may either excite or inhibit internal organs in the autonomic system |
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| chemical messenger that acts as a hormone to mobilize the body for fight or flight during times of stress; neurotransmitter in the CNS |
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| neurotransmitter found in the brain and in the sympathetic division of the ANS |
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| chemical released by a neuron onto a target with an excitatory or inhibitory effect |
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| organelle consisting of a membrane structure that encloses a quantum of neurotransmitter |
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| gap that separates the presynaptic membrane from the postsynaptic membrane |
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| junction at which messenger molecules are released when stimulated by an action potential |
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| membrane on the transmitter-output side of a synapse |
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| membrane on the transmitter-input side of a synpase |
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| membranous compartment that holds several vessicles containing a neurotransmitter |
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| fused presynaptic and postsynaptic membrane that allows an action potential to pass directly from one neuron to the next |
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| amine neurotransmitter that plays a role in coordinating movement, in attention and learning, and in behaviors that are reinforcing |
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| protein molecule that pumpes substances across a membrane |
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| transmitter-activated receptor |
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| protein that has a binding site for a specific neurotransmitter and is embedded in the membrane of a cell |
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| "self-receptor" in a neural membrane that responds to the transmitter released by the neuron |
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| quantity, equivalent to the contents of a single synaptic vessicle, that produces a just observable change in postsynaptic electric potential |
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| deactivation of a neurotransmitter when membrane transporter proteins bring the transmitter back into the presynaptic axon terminal for subsequent reuse |
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| small-molecule transmitter |
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| belongs to a class of quick-acting neurotransmitters synthesized in the axon terminal from productes derived from the diet |
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| any enzyme that is in limited supply, thus restricting the pace at which a chemical can be synthesized |
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| amine neurotransmitter that plays a role in regulating mood and aggression, appetite and arousal, the perception of pain, and respiration |
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| amino acid neurotransmitter that inhibits neurons |
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| amino acid neurotransmitter that inhibits neurons |
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| neurotransmitter that controls arousal and waking; can cause the constriction of smooth muscles and so, when activated in allergic reactions, contributes to asthma |
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| multifunctional chain of amino acids that acts as a neurotransmitter; act as hormones, may contribute to learning |
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| acts as a chemical neurotransmitter gas in the activation of cellular metabolism |
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| acts as a neurotransmitter gas in the activation of cellular metabolism |
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| embedded membrane protein with two parts: a binding site for a neurotransmitter and a pore that regulates ion flow to directly and rapidly change membrane voltage |
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| embedded membrane protien, with a binding site for a neurotransmitter but no pore, linked to a G protein that can affect other receptors or act with second messengers to affect other cellular processes |
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| belongs to the family of guanyl-nucleotide-binding receptors coupled to a metabotropic receptors that, when activated, bind to other proteins |
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| chemical that carries a message to initiate a biochemical process when activated by a neurotransmitter |
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| neuron that uses acetylcholine as its main neurotransmitter |
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| neural pathways that coordinate brain activity through a single neurotransmitter; cell bodies are located in a nucleus in the brainstem and axons are distributed through a wide region of the brain |
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| behavioral disorder characterized by delusions, hallucinations, disorganized speech, blunted emotion, agitation or immobility |
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| neuron containing norepinephrine |
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| mood disorder characterized by prolonged feelings of worthlessness and guilt, the disruption of normal eating habits, sleep disturbances, a general slowing of behavior, and frequent thoughts of suicide |
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| disordered mental state of extreme excitement |
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| behavior disorder characterized by compulsively repeated acts and repetitive, unpleasant thoughts |
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| relatively permanent change in behavior that results from experience |
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| learning behavior in which a response to a stimulus weakens with repeated stimulus presentations |
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| learning behavior in which the response to a stimulus strenghtens with repeated presentations of that stimulus because the stimulus is stronger than normal |
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| syndrome characterized by physiological arousal sympotoms related to recurring memories and dreams related to a traumatic event for months or years after the event |
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| linkage of two or more unrelated stimuli to elicit a behavioral response |
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| in response to stimulation at a synapse, changed amplitude of an excitatory postsynaptic potential that lasts for hours to days or longer and plays a part in associative learning |
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