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NEST2013BiologyNeural Control and Coordination

Neurons were kept in a physiological solution. During the resting phase, the membrane potential in the axoplasm of neurons was negative compared to the extracellular space and a potential difference of -70 mV was observed in this phase. Neurons were then treated in two different experiments with either gamma-amino butyric acid (GABA; an inhibitory neurotransmitter) or glutamate (an excitatory neurotransmitter) and th

Options

  1. AThe resting membrane potential of -70 mV would not change with either GABA or glutamate treatments.
  2. BThe membrane potential would be even more negative than resting phase with GABA treatment.
  3. CThe membrane potential would be positive when the neuron was exposed to glutamate.
  4. DThe membrane potential would be more negative than resting potential after glutamate treatment.

Correct answer

C. The membrane potential would be positive when the neuron was exposed to glutamate.

Step-by-step solution

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