Pseudounipolar neuron - wikipedia Pseudounipolar neuron Pseudounipolar neuron 1 : Pseudounipolar neuron, 2 : Bipolar neuron Details System Nervous system Identifiers Latin neuron pseudounipolare TH H2. 00.06. 1.00047 Anatomical terms of neuroanatomy ( edit on Wikidata ) A pseudounipolar neuron ( pseudo -- false, uni -- one ) is a kind of sensory neuron in the peripheral nervous system. This neuron contains an axon that has split into two branches ; one branch runs to the periphery and the other to the spinal cord. Contents 1 Structure 1.1 In the dorsal root ganglia 1.2 In the sensory ganglia of cranial nerves 2 Function 2.1 Signal pathway 3 See also 4 References Structure By definition, a pseudounipolar neuron has one axon with two branches : central and peripheral. These axonal branches should not be confused with dendrites. These sensory neurons are an exception to the typical neuron, in that they do not have separate dendrites and an axonal process, but rather one branched process that serves both functions. The axon has a peripheral branch ( from the cell body to the periphery : skin, joint and muscle ) and a central branch ( from the cell body to spinal cord ). In the dorsal root ganglia The soma ( cell body ) of each pseudounipolar neuron is located within a dorsal root ganglion. The axon leaves the cell body ( and out of the dorsal root ganglion ) into the dorsal root, where it splits into two branches. The central branch goes to the posterior ( dorsal ) horn of the spinal cord, where it forms synapses with other neurons. The peripheral branch travels through the distal dorsal root into the spinal nerve all the way until skin, joint, and muscle. In the sensory ganglia of cranial nerves Pseudounipolar neurons are also found in the sensory ganglia of cranial nerves V, VII, IX and X, all mixed - cranial nerves. The vestibulocochlear nerve, has the bipolar neuron type in both the spiral ganglion as well as Scarpa 's ganglion. Function Signal pathway These neurons have sensory receptors on skin, joints, muscles, and other parts of the body. The area of the axon that is closest to the receptor is the trigger zone for the neuron. The signal is conducted through the axon to the dorsal root ganglion 's cell body, then through the axon and ending at the sensory nuclei in the posterior horn of the spinal cord. See also Bipolar neuron Multipolar neuron Unipolar neuron References ^ Jump up to : Kandel, Eric R. ; Schwartz, James H. ; Mack, Thomas M. Jessell ( 2000 ). Principles of neural Science ( 4th ed. ). Cambridge : McGrawHill. p. 24. ISBN 978 - 0838577011. ^ Jump up to : MacCallum, Don. `` Peripheral Nervous System ''. Histology and Virtual Microscopy Learning Resources. University of Michigan Medical School. Archived from the original on 7 July 2014. Retrieved 24 June 2014. Jump up ^ Miller 's Anatomy of the Dog, By Howard E. Evans, Alexander de Lahunta, 4th ed, pp 565 Nervous tissue CNS Tissue Types Grey matter White matter Projection fibers Association fiber Commissural fiber Lemniscus Funiculus Fasciculus Nerve tract Decussation Commissure Neuropil Meninges Cell Types Neuronal Pyramidal Purkinje Granule Glial insulating : Myelination : Oligodendrocyte other Astrocyte Radial glial cell Ependymal cells Tanycyte Microglia PNS General Dorsal Root Ganglion Ramus Ventral Root Ramus Ramus communicans Gray White Autonomic ganglion ( Preganglionic nerve fibers Postganglionic nerve fibers ) Connective tissues Epineurium Perineurium Endoneurium Nerve fascicle Neuroglia Myelination : Schwann cell Neurilemma Myelin incisure Node of Ranvier Internodal segment Satellite glial cell Neurons / nerve fibers Parts Soma Axon hillock Axon Telodendron Axon terminals Axoplasm Axolemma Neurofibril / neurofilament Dendrite Nissl body Dendritic spine Apical dendrite / Basal dendrite Types Bipolar Unipolar Pseudounipolar Multipolar Interneuron Renshaw Afferent nerve fiber / Sensory neuron GSA GVA SSA SVA fibers Ia or Aα Ib or Golgi or Aα II or Aβ and Aγ III or Aδ or fast pain IV or C or slow pain Efferent nerve fiber / Motor neuron GSE GVE SVE Upper motor neuron Lower motor neuron α motorneuron β motorneuron γ motorneuron Termination Synapse Electrical synapse / Gap junction Chemical synapse Synaptic vesicle Active zone Postsynaptic density Autapse Ribbon synapse Neuromuscular junction Sensory receptors Meissner 's corpuscle Merkel nerve ending Pacinian corpuscle Ruffini ending Muscle spindle Free nerve ending Nociceptor Olfactory receptor neuron Photoreceptor cell Hair cell Taste bud Retrieved from `` https://en.wikipedia.org/w/index.php?title=Pseudounipolar_neuron&oldid=833952921 '' Categories : Afferent neurons Hidden categories : Pages with unresolved properties Talk Contents About Wikipedia Čeština Deutsch Français Italiano Svenska 中文 Edit links This page was last edited on 3 April 2018, at 05 : 01. About Wikipedia

Question: where are unipolar neurons found in spinal cord
Answer: the distal dorsal root