Autonomic Motor Pathways The diagram below represents the nervous system from a lateral view. It illustrates the basic routes of. the autonomic motor pathways in the brain and spinal cord, Use this diagram to answer the questions that follow. POSTERIOR 1. The autonomic nervous system (ANS) consists of two divisions: 2. Which division consists of nerves that attach to the brainstem and sacral region of the spinal cord?10. The synapse between these two motor neurons is (circle one): always excitatory, sometimes excitatory, never excitatory. 11. For both branches of the ANS, the first motor neurons release the neurotransmitter at these synapses. 12. For both branches of the ANS, the second motor neuron responds to this neurotransmitter when it binds to receptors. 13. The axons of these second motor neurons synapse on the effector cells that the ANS communicates with. These synapses are (circle one): always excitatory, sometimes excitatory, never excitatory. 14. For the parasympathetic branch of the ANS, the synapses between motor neurons and effectors always involves the neurotransmitter released by the presynaptic cell and receptors on the surface of the postsynaptic cell. 15. For the sympathetic branch of the ANS, the synapses between motor neurons and effectors always involves the neurotransmitter released by the presynaptic cell and receptors on the surface of the postsynaptic cell..