Caudal pontine reticular nucleus

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Brain: Caudal pontine reticular nucleus
Latin nucleus reticularis pontis caudalis
NeuroNames hier-561
Dorlands/Elsevier n_11/12583092

The caudal pontine reticular nucleus is composed of gigantocellular neurons.

In rabbits and cats it is exclusively giant cells, however in humans there are normally sized cells as well.

The pontis caudalis is rostral to the gigantocellular nucleus and is located in the caudal pons, as the name would indicate.

The pontis caudalis has been known to mediate head movement, in concert with the nucleus gigantocellularis and the superior colliculus[1].

The neurons in the dorsal half of this nuclei fire rhythmically during mastication, and in an anesthetized animal it is possible to induce mastication via electrical stimulation of the PC or adjacent areas of the gigantocellular nucleus[2].

The pontis caudalis is also thought to play a hand in the grinding of teeth during sleep.

  1. ^ Sasaki S, The neural control of orienting: role of multiple-branching reticulospinal neurons. Prog Brain Res. 2004;143:383-9.
  2. ^ Scott G, Effect of lidocaine and NMDA injections into the medial pontobulbar reticular formation on mastication evoked by cortical stimulation in anaesthetized rabbits. Eur J Neurosci. 2003 May;17(10):2156-62.
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v • d • e
Brain: reticular formation
v • d • e
Brain: rhombencephalon (hindbrain)
Myelencephalon/medulla

anterior/ventral: Arcuate nucleus of medulla • Pyramid (Decussation) • Olivary body • Inferior olivary nucleus • Anterior median fissure • Ventral respiratory group

posterior/dorsal: VII,IX,X: Solitary/tract • XII, X: Dorsal • IX,X,XI: Ambiguus • IX: Inferior salivatory nucleus • Gracile nucleus/Cuneate nucleus/Accessory cuneate nucleus • Area postrema • Posterior median sulcus • Dorsal respiratory group

raphe/reticular: Sensory decussation • Reticular formation (Gigantocellular nucleus, Parvocellular reticular nucleus, Ventral reticular nucleus, Lateral reticular nucleus, Paramedian reticular nucleus) • Raphe nuclei (Obscurus, Magnus, Pallidus)

tracts: Corticospinal tract (Lateral, Anterior) • Inferior cerebellar peduncle • Olivocerebellar tract • Spinocerebellar (Dorsal, Ventral) • Spinothalamic tract • PCML (Posterior external arcuate fibers, Internal arcuate fibers, Medial lemniscus) • Extrapyramidal (Rubrospinal tract, Vestibulospinal tract, Tectospinal tract)
Metencephalon/pons
Metencephalon/cerebellum Vermis • Flocculus • Arbor vitae • Cerebellar tonsil • Inferior medullary velum

Molecular layer (Stellate cell, Basket cell, Parallel fiber) • Purkinje cell layer (Purkinje cell) • Granule cell layer (Golgi cell) • Mossy fibers • Climbing fiber

Deep cerebellar nuclei (Dentate, Emboliform, Globose, Fastigial)
Fourth ventricle apertures (Median, Lateral) • Rhomboid fossa (Vagal trigone, Hypoglossal trigone, Obex, Sulcus limitans, Facial colliculus, Medial eminence) • Lateral recess
Retrieved from "http://en.wikipedia.org/wiki/Caudal_pontine_reticular_nucleus"
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