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Created by alexlpeart
over 11 years ago
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Question | Answer |
Give the three types of synapse. Why of these is most potent at eliciting a response? | Axodendritic, Axosomatic, Axoaxonic. The most potent is axoaxonic synapses as they directly influence the synapse of the axon. |
What is a ligand? | A super specific molecule which elicits a specific physiological response. |
Describe the two types of gating mechanisms and give the main points about each of them. | Ionotropic, looks out from the cell and is directly effected by a ligand meaning its fast to react but has a smaller response. Metatropic, uses a second message system to transmit the message from a ligand to inwards facing channel receptors. This means the response is slower but is amplified by the cascade effect. |
Give the four groups of transmitter. | Amino acids, Neuropeptides, Monoamides and Other |
what are mini end plate potentials? | The spontaneous release of neurotransmitter vesicles without the simulation from the nerve. |
What is the role of a synapse? | Amplify signals and allow information processing (gives us access to many nerves) |
What is the problem with electrical synapses? Why is this nor a problem in chemical synapses? Do humans use these synapses and if so where? | They allow the charge to leak from the synapse. Animals might use tight junctions as a method of preventing this electrical leak but humans don't use electrical synapses. Chemical synapses still allow leak but due to their all or nothing principles they are unaffected. |
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