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Laverty Physiology 2
Physio Test 2
| Question | Answer |
|---|---|
| Excitatory Synapse | a synapse that when activated pushes the psn towards ap or increases freq of APs |
| Inhibitory Synapse | a synapse that when activated pushes the psn away from ap or decreases freq of APs |
| Convergence | many psns synapsing on one psn |
| Divergance | one psn synapsing on many psns |
| Ionotropic receptors | membrane protein through which ionic current is controlled by the binding of extracellular signaling molecules |
| Metabotropic Receptor | membrane receptor in neurons that initiates formation of second messengers wen bound to a ligand |
| EPSP | depolarizing graded potential in psn in response to activation of excitatory synapse |
| IPSP | hyperpolarizing graded potential that arrises in psn in response to activation of inhibitory synapse |
| Temporal summation | membrane potential produced as 2 or more inputs occurring at different times are ADDED together potential change is > that by 1 input |
| Spacial Summation | adding together effects of simultaneous inputs to different places on a neuron to produce potential change > 1 input |
| axo-axonic synapse | presynaptic synapse where an axon stimulates the presynaptic terminal of another axon |
| presynaptic inhibition | inhibitory input to neurons through synapses at the axon terminal |
| presynaptic facilitation | excitatory input to neurons through synapses at the nerve terminal |
| autoreceptor | a receptor on a cell affected by a chemical messenger released from the same cell |
| receptor desensitization | temporary inability of a receptor to respond to its ligand due to prior ligand binding |
| agonists | antagonists |