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.
Neuron: A nerve cell that receives and sends electrical signals over long distances within the body.A neuron receives electrical input signals from sensory cells (called sensory neurons) and from other neurons.The neuron sends electrical output signals to muscle neurons (called motoneurons or motor neurons) and to other neurons.A neuron that simply signals another neuron is called an interneuron.euron: A nerve cell that receives and sends electrical signals over long distances within the body.