11. The efferent arc occurs via the Facial Nerve. 12. The vascular pole is where the afferent and efferent arterioles communicate with the glomerulus. 13. The efferent synapses to hair cells are inhibitory and utilize acetylcholine as a transmitter. 14. Action potential in a somatic efferent neuron causes the release of the neurotransmitter acetylcholine. 15. Acetylcholine is released from the efferent nerve endings. 16. These authors maintain an efferent motor command is necessary for a sense of agency. 17. Efferent synapses occur on outer hair cells and on afferent axons under inner hair cells.18. These exceptions receive general somatic efferent innervation. 19. The other main efferent pathways from the amygdala are the stria terminalis and anterior commissure. 20. Within the cortex, nephrons are organized around central veins of the efferent venous system.