Homework SoursePart A Neuron J has a resting membrane potential of 70mV and
Part A
Neuron J has a resting membrane potential of -70mV and a threshold value of -50mV. Neuron K releases neurotransmitter onto Neuron J, which causes a 20mV depolarization at the axon hillock. Neuron L causes a 10mV hyperpolarization at the axon hillock. In which of the following scenarios would an action potential be generated at Neuron J\'s axon?
Neuron J has a resting membrane potential of -70mV and a threshold value of -50mV. Neuron K releases neurotransmitter onto Neuron J, which causes a 20mV depolarization at the axon hillock. Neuron L causes a 10mV hyperpolarization at the axon hillock. In which of the following scenarios would an action potential be generated at Neuron J\'s axon?
SubmitHintsMy AnswersGive UpReview Part
| Neuron K and Neuron L each fire once, simultaneously. |
| Neuron K fires once. |
| Neuron L fires once. |
Solution
Neuron K fires once is the correct answer. Action potential is all or none phenomenon. If the threshold value has reached then it will release neurotransmitter otherwise it doesnt.
