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Physio set 1
| Question | Answer |
|---|---|
| Action potential | Membrane potential of a neuron that is conducting an impulse; also known as a nerve impulse |
| Depolarization | Movement of the membrane potential toward zero |
| Hyperpolarization. | Movement of the membrane potential away from zero |
| Saltatory conduction | Action potential seems to “leap” from node to node along the myelinated fiber |
| 3 structures that make up a chemical synapse | Synaptic knob, Synaptic cleft Plasma membrane of a postsynaptic neuron |
| Electrical synapses | Involve gap junctions that allow action potentials to move from cell to cell directly by allowing electrical current to flow between cells |
| Chemical synapses | Involve transmitter chemicals (neurotransmitters) that signal postsynaptic cells, possibly inducing an action potential |
| Acetylcholine (ACh) | has a chemical structure unique among neurotransmitters. It is synthesized in neurons by combining an acetate (acetyl coenzyme A) with choline (sometimes listed as a B vitamin) |
| Amines - monoamine subclass | Serotonin and Histamine |
| Amines - catecholamine subclass | Dopamine, Epinephrine, and Norepinephrine |
| Amino acids | Common neurotransmitters of the CNS. In PNS, amino acids are stored in synaptic vesicles and used as neurotransmitters |
Created by:
Saul Carranza