If three neurotransmittors bind to a normal neuron at resting Vm on the dendrites.. 1st neurotransmittor:...
If three neurotransmittors bind to a normal neuron at resting Vm on the dendrites..
1st neurotransmittor: opens Na+ channels and causes graded potential of 5mV
2nd neurotransmittor: opens Cl- channels and causes graded potential of 8mV
3rd neurotransmittor: opens K+ channels and causes graded potential of 10mV
will this neuron have an action potential? please explain.
Homework Answers
The resting membrane potential of a neuron is -70 mV. And the Threshold potential of a neuron is -55 mV.
So for a neuron to get depolarised we need a minimum of following potential:
Potential required = -55 -(-70) = 70-55 = +15mV
So we need a stimulus of total 15mV for the nerve to have an action potential.
We have stimulus of = 5 + 8+10 = +23 mV
This is greater than the Threshold potential required. So the Neuron will have the action potential.
It was a pleasure answering your question. Hope this helps...
Good luck!
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