BIO 330: General Physiology Grim Fall 2017 5) Neuron A and Neuron B action poten

Question

BIO 330: General Physiology Grim Fall 2017 5) Neuron A and Neuron B action potential in Neuron A or Neuron B (indicated by the vertical arrow in Figure 1), a postsynapti (EPSP or IPSP, not an action potential) results. Several measurements were made, including the equilibrium potentials for the postsynaptic cell, postsynaptic reversal potentials when either Neuron A or Neuron B tired a action potential, and both the duration and magnitude of the EPSP in the postsynaptic ce presented below .Resting Vm of the postsynaptic cell--75 mV form synapses on the same postsynaptic cell as shown in Figure 1. When there is a E-+50 mV EK =-80 mV Ea=-60 mV Erev +50 mV (when Neuron A fires) Enew--80 mV (when Neuron B fires) EPSP duration when Neuron A fires-30 msec A. Post * EPSP duration when Neuron B fires = 80 sec · EPSP magnitude when Neuron B fires = 1.5 mV Answer the following questions. Identify the type (not the ion involved) of receptor that binds the NTs from Neuron A. Justify your answer by EPSP magnitude when Neuron A fires 1 mV explicitly referring to ata in addition to your knowledge of neurotransmitter receptors. Fill-in 6. Slow postsynaptic potentials take place when a neurotransmitter binds to a receptor 7. You are studying a squid giant axon. When you depolarize the membrane potential beyond again and although the depolarization should have been sufficient to initiate another action potential, it does no You conclude that this second depolarization took place during the an action potential results. You then depolarize the axon

Explanation / Answer

6. The slow postsynaptic potentials takes place when the neurotransmitter binds to seven transmembrane domain receptor

7. a. -60mV B.  hyperpolarization of the cell

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