3. The figure below depicts a hypothetical neural circuit. The green neurons dep

Question

3. The figure below depicts a hypothetical neural circuit. The green neurons depolarize the postsynaptic neuron. The red neuron hyperpolarizes the membrane of the postsynaptic neuron. When neurons A, B, and C fire alone, no action potential is elicited in neuron X. For each of the following instances, determine if the combination of neurons firing at the same time will be more likely, less likely, or as likely to generate and action potential in neuron X when compared to the firing of neuron A alone. For each scenario draw a graph that represents what is happening a. A+ B b. B+C c. A+B+ C

Explanation / Answer

answer

a.A+B

typical neuron has a resting potential (potential across the membrane) of -6060minus, 60 to -7070minus, 70 millivolts. This means that the interior of the cell is negatively charged relative to the outside

Electrical synapses are present, but rare- where the synaptic cleft is negligible in length (i.e. impulses can pass directly from the terminal to a dendrite.) They are much more common in invertebrates.

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