MCAT Question A Day - 6/24/13
When a neurotransmitter released from one neuron (pre-synaptic neuron) makes it more difficult for the next neuron (post-synaptic neuron) to depolarize, this phenomenon is called inhibition. What might be happening at the synapse to cause inhibition?
A. The neurotransmitter causes extra Na+ to immediately enter the post-synaptic neuron.
B. The neurotransmitter causes extra K+ to immediately enter the post-synaptic neuron.
C. The neurotransmitter causes extra Na+ to immediately leave the post-synaptic neuron.
D. The neurotransmitter causes extra K+ to immediately leave the post-synaptic neuron.
