Neuro
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Synapse types | Chemical (gap) - more common. Electrical (no gap) ions flow from the neuron directly into the target cell.
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| Synaptic cleft | the gap between the terminal of an axon and target cell.
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| Synaptic vessicles | contain neurotransmitter - only certain neurotransmitters can be received by certain neuroreceptors (key & lock)
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| Neurotransmitter | molecules that communicate information between neurons, target cells, and chemical synapses. (Excitatory or inhibitory.)
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| Neurotransmitter categories (3) | Amino acids, peptides (larger molecules), monoamines (biogenic amines), Acetylcholine.
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| Amino acids | Glutamate (most common excitatory neurotransmitter). GABA (most common inhibitory neurotransmitter, in the brain). Glycine (most common inhibitory neurotransmitter, in the spinal cord).
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| Monoamines | For attention, consciousness, cognition, emotion. e.g., Serotonin, Histamine, Catecholamines (dopamine, epinephrine, norepinephrine)
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| Peptides | Opioids (for perception of pain). Endorphins
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| Acetylcholine | In CNS, functions as a neuromodulator (alters the way other brain structures process information). In PNS, it's released by motor neurons that synapse on skeletal muscle. In ANS, it's a major internal transmitter.
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