If you step on a tack, peripheral neurons carry that pain in…

If you step on a tack, peripheral neurons carry that pain information to the central nervous system. These peripheral neurons first synapse onto spinal projection neurons that have their cell bodies in the spinal cord. These spinal projection neurons then carry the pain information to the brain. Consider the image below. Where are the cell bodies of the neurons that these spinal projection neurons synapse onto? In other words, if the spinal projection neurons are the presynaptic cell, where are the cell bodies of the neurons that are the postsynaptic cell?

A presynaptic neuron releases the chemical GABA from synapti…

A presynaptic neuron releases the chemical GABA from synaptic vesicles into the synapse. GABA is an inhibitory neurotransmitter. GABA binds to receptors in the postsynaptic dendritic spine. How will this affect the postsynaptic neuron? Select true of false for each statement below: The binding of GABA to postsynaptic receptors will depolarize the postsynaptic neuron. [false1] The binding of GABA to postsynaptic receptors will bring the Vm at the axon hillock of the postsynaptic neuron closer to threshold. [false2] The binding of GABA to postsynaptic receptors will make the postsynaptic neuron less likely to fire an action potential. [true1]  The binding of GABA to postsynaptic receptors will cause Na+ to rush into the postsynaptic neuron. [false3]