Which of the following statements is TRUE about temporal summation? The postsynaptic cells potential is a combination of two EPSPs arriving at a synapse at rapid succession. Two synapses on different regions of a cell are stimulated at the same time. A synapse is stimulated a second time after the effect of a first stimulus at the synapse has been terminated. IPSPS, but not EPSPS are combined

Which of the following statements is TRUE about temporal summation? The postsynaptic cells potential is a combination of two EPSPs arriving at a synapse at rapid succession. Two synapses on different regions of a cell are stimulated at the same time. A synapse is stimulated a second time after the effect of a first stimulus at the synapse has been terminated. IPSPS, but not EPSPS are combined

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter4: Principles Of Neural And Hormonal Communication

Section: Chapter Questions

Problem 1SQE: Answer the following questions regarding conduction of action potentials using the velocities given...

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what changes at the synapse underlie long-term potentiation. Select all that apply with explanation 1.A decreased number of receptors 2.An increase in transporters 3.An increased release of neurotransmitters 4.An increased number of receptors.
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Identifying Neurotransmitters 3) Produces response in postsynaptic cell - Qualifying condition: Molecules evoking same response as neurotransmitters Presynaptic terminal Postsynaptic. dendrite Drug-containing micropipette (753) Apply drug by passing electrical current Stimulate axon Record V Drug application through the micro-pipette Stimulated neurons Change in membrane potential AVm Outcome 1 Outcome 2 Outcome 3 0 -30 mV 15 mV 0 -15 mV -15 mV What is the interpretation of the above results?
In temporal summation.. Select one: O A. IPSPS, but not EPSPS, are combined. O B. The postsynaptic cell's potential is a combination of two EPSPS arriving at a synapse in rapid succession. O C. Two synapses on different regions of a cell are stimulated at the same time. O D. A synapse is stimulated a second time after the effect of a first stimulus at the synapse has been terminated. O E. The size of an action potential depends on the size of the stimulus.
Post-tetanic Potentiation in synapses :-a- is due to increased Ca ++ concentration in postsynaptic neuronsb- is due to increased Ca ++ influx into presynaptic neuronsc- results from slow prolonged stimulation of synapsed- causes fatigue of the synapse
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Besides the standard post- and pre-synapse that exchange information, non neuronal cell types also play a role in synaptic transmission. One of those are called astrocytes and can form a tripartite synapse. Explain the roles of astrocytes in synaptic transmission.
Given the steps shown below, which of the following is the correct sequence for transmission at a chemical synapse? 1. neurotransmitter binds with receptor 2. sodium ions rush into neuron's cytoplasm 3. action potential depolarizes the presynaptic membrane 4. ion channel opens to allow particular ion to enter cell 5. synaptic vesicles release neurotransmitter into the synaptic cleft O 1, 2, 3, 4, 5 O 5, 1, 2, 4, 3 O 2, 3, 5, 4, 1 O4, 3, 1, 2, 5 O 3, 2, 5, 1, 4
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Based upon the changes in permeability seen in the trace below and your knowledge of ion distributions across a cell, predict how ion movements would change during an action potential. Drag and drop each phrase into the appropriate box on the action potential trace. Drag the appropriate labels to their respective targets. Note: not all labels will be used. ►View Available Hint(s) Sodium (Na+) ions move to the axon Sodium (Na) ions move out of the axon Less potassium (K) ions move out of the axon Potassium (K) ions move out of the axon Potassium (K¹) ions move into the axon Sodium (Na) ions stop moving in Membrane potential (mv) +30 +10 0 -10- -30 -50 -70 -90 A PNa 0 PNa 5 6 1 PK Threshold PK 2 Reset Help