455:
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371:). The cuneate nucleus is wedge-shaped and located in the closed part of the medulla. It lies lateral to the gracile nucleus and medial to the spinal trigeminal nucleus in the medulla. The large number of neurons found there give rise to the
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information from the lower part of the body (below the level of T6 in the spinal cord). Because of the large population of neurons in the gracile nucleus they give rise to a raised area called the
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In some other animals, a third nucleus is present, known as the median accessory nucleus. This may carry information from the
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is lateral to the gracile nucleus. It carries the same type of information, but from the upper body and the
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102:, the dorsal column nuclei consist of paired gracile, and cuneate nuclei (labels 6 and 7, respectively).
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The major nuclei are the cuneate nucleus and gracile nucleus. These are present at the bottom of the
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Scheme showing the course of the fibers of the lemniscus; medial lemniscus in blue, lateral in red.
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This article is about the structure in the medulla oblongata. For the hypothalamic structure, see
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Li, Carol; Eapen, Blessen C.; Jaramillo, Carlos A.; Cifu, David X. (2018).
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is medial to the cuneate nucleus. Its neurons receive afferent input from
759:"5 - Central Nervous System Disorders Affecting Mobility in Older Adults"
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seen on viewing the posterior aspect of the medulla on the side of the
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that have travelled in the spinal cord. They then send on second-order
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on the posterior side of the closed medulla at the floor of the
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Gray's anatomy: the anatomical basis of clinical practice
399:. The gracile nucleus carries information from the lower
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Neurons of the dorsal column nuclei eventually reach the
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570:"2.05 - Evolution of the Nervous System in Reptiles"
506:(41 ed.). Elsevier Limited. pp. 309–330.
484:Fourth ventricle. Posterior view. Deep dissection.
241:. Both dorsal column nuclei contain synapses from
713:Güntürkün, O.; Stacho, M.; Ströckens, F. (2020).
221:The dorsal column nuclei each have an associated
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419:The dorsal column nuclei may degenerate during
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369:principal sensory nucleus of trigeminal nerve
184:, which are situated at the lower end of the
27:Nuclei in the dorsal column of the brainstem
284:with third-order neurons of the thalamus.
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387:The dorsal column nuclei help to carry
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715:"8 - The Brains of Reptiles and Birds"
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527:Schoenen, Jean; Grant, Gunnar (2004).
251:dorsal column–medial lemniscal pathway
176:. The name refers collectively to the
170:dorsal column–medial lemniscus pathway
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64:Anatomical terms of neuroanatomy
674:"21 - The Somatosensory System"
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529:"8 - Spinal Cord: Connections"
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168:in the dorsal columns of the
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616:"25 - Somatosensory System"
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502:Standring, Susan (2016).
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678:The Mouse Nervous System
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533:The Human Nervous System
270:internal arcuate fibers
237:, together forming the
620:The Rat Nervous System
614:Tracey, David (2004).
188:. Both nuclei contain
144:Anatomical terminology
568:Bruce, L. L. (2007).
415:Clinical significance
243:afferent nerve fibers
725:. pp. 159–212.
684:. pp. 563–570.
626:. pp. 797–815.
580:. pp. 125–156.
539:. pp. 233–249.
190:second-order neurons
162:dorsal column nuclei
119:Somatosensory system
83:Dorsal column nuclei
40:Dorsal column nuclei
472:The sensory tract.
310:dorsal root ganglia
274:sensory decussation
769:. pp. 57–67.
325:gracile fasciculus
235:cuneate fasciculus
231:gracile fasciculus
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641:978-0-12-547638-6
595:978-0-12-370878-6
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513:978-0-7020-5230-9
447:Additional images
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278:medial lemniscus
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333:kinesthetic
321:lower limbs
227:spinal cord
223:nerve tract
125:Identifiers
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45:Identifiers
490:References
389:fine touch
194:fine touch
137:nlx_153860
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804:Brainstem
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329:epicritic
212:Structure
174:brainstem
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767:Elsevier
403:and the
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319:and the
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282:synapse
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327:carry
288:Nuclei
229:, the
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401:torso
397:brain
317:torso
266:axons
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