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10 Cards in this Set
- Front
- Back
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Acetylcholine |
Location: found in neuromuscular junctions and in many parts of the brain Function: can be excitatory or inhibitory; vital for stimulating mm contraction and the parasympathetic division of the ANS; also involved with memory |
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Epinephrine |
Location: found in several areas of the CNS and in the sympathetic division of the ANS Function: can be excitatory or inhibitory; stimulates the sympathetic division of the autonomic nervous system or "fight or flight" response; hormonelike action when secreted by the adrenal medulla |
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Norepinephrine |
Location: found in several areas of the CNS and in the sympathetic division of the ANS Function: similar to epinephrine, can be excitatory or inhibitory; also a hormone secreted by the adrenal medulla. This hormone mediates several physiologic and metabolic responses related to sympathetic arousal (fight or flight); also involved in dreaming, mood regulation, and emotional responses |
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Dopamine |
Location: found in the brain and ANS Function: mostly inhibitory and involved in emotions, moods, and motor control regulation; also implicated in attention and learning |
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Serotonin |
Location: found in several regions of the CNS Function: mostly inhibitory and important for sensory perception, mood regulation, and normal sleep |
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Histamine |
Location: found in the brain Function: mostly excitatory and involved in emotions, body temp regulation, and water balance; histamine stimulates inflammatory responses when not acting as a neurotransmitter |
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Enkephalins |
Location: found in several regions of the CNS, the retina, and the intestinal tract Function: mostly inhibitory and action is similar to that of opiates as a pain-reducing agent |
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Endorphins |
Location: found in several regions of the CNS, the retina, and the intestinal tract Function: mostly inhibitory and action is similar to that of opiates as a pain- reducing agent |
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Gamma-aminobutyric acid (GABA) |
Location: found in the brain Function: mostly inhibitory |
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Substance P |
Location: found in the brain, spinal cord, pain pathways, and the intestinal tract Functions: mostly excitatory and transmits pain information; association with inflammatory processes |
