The developing olfactory system–merging of the peripheral and central nervous systems:The olfactory system is responsible for the sense of smell and is comprised of a complex topographic map that regenerates throughout life.In rodents each olfactory sensory neuron expresses one of~1,300 odorant receptors with the neurons being distributed mosaically within the epithelium.The axons of the sensory The developing olfactory system-merging of the peripheral and central nervous systems: The olfactory system is responsible for the sense of smell and is comprised of a complex topographic map that regenerates throughout the life. Each rodents sensory neuron expresses one of ~ 1,300 odorant receptors with the neurons being distributed mosaically within the epithelium. the axons of the sensory