Academy of Doctors of Audiology. Advanced Beneficiary Notice FAQ. The Advanced Beneficiary Notice of Noncoverage (ABN) is a Medicare document that is used to notify Medicare beneficiaries of their potential financial responsibilities prior to the rendering of a service or the dispensing of an item.
primary sensory neuron. A sensory neuron that is the first in an afferent pathway, beginning at the receptor and ending at a synapse with a secondary sensory neuron, often within a nucleus of the central nervous system. One common type is the pseudounipolar neuron. 1  pseudounipolar neuron.  secondary sensory neuron.
They follow ascending, or afferent pathways, so called â afferent neurons â. The cell body of the sensory neurons is located in the peripheral sensory ganglia, in the peripheral nervous system. Sensory neurons are unipolar neurons with afferent fibers, which extend between sensory receptors and central nervous system.ensory vs Motor Neurons. Neurons are the functional and structural units of vertebrate nervous system. They make the communication network of the nervous system and transfer impulses between sensory organs, and central and peripheral nervous systems.