Pontocerebellar fibers

Pontocerebellar fibers: Brain: Pontocerebellar fibers

Scheme showing the connections of the several parts of the brain.

Latin fibrae pontocerebellares

NeuroNames ancil-408

The pontocerebellar fibers are fibers that run within the middle cerebellar peduncles, from the pons to the cerebellum.

The term "corticopontocerebellar" is sometimes used to denote afferent signals from the cerebral cortex.^[1]

References

^ Kitamura K, Nakayama K, Kosaka S, et al. (April 2008). "Diffusion tensor imaging of the cortico-ponto-cerebellar pathway in patients with adult-onset ataxic neurodegenerative disease". Neuroradiology 50 (4): 285–92. doi:10.1007/s00234-007-0351-9. PMID 18172629.

External links

http://www.neuroanatomy.wisc.edu/virtualbrain/BrainStem/16Pontine.html

http://isc.temple.edu/neuroanatomy/lab/atlas/pmjdc/

http://www.sylvius.com/index/p/pontocerebellar_fibers.html

v · d · eHuman brain, rhombencephalon, metencephalon: cerebellum (TA 14.1.07, GA 9.788)

Surface anatomy

Lobes

Anterior lobe · Posterior lobe (Horizontal fissure) · Flocculonodular lobe (Flocculus, Nodule)
Primary fissure

Medial/lateral

Vermis: anterior (Central lobule, Culmen, Lingula) · posterior (Folium, Tuber, Uvula) · Vallecula of cerebellum
Hemisphere: anterior (Alar central lobule) · posterior (Biventer lobule, Cerebellar tonsil)

Grey matter

Deep cerebellar nuclei

Dentate · interposed (Emboliform, Globose) · Fastigial

Cerebellar cortex

Molecular layer (Stellate cell, Basket cell)

Purkinje cell layer (Purkinje cell, Bergmann glia cell = Golgi epithelial cell)

Granule cell layer (Golgi cell, Granule cell, Unipolar brush cell)
Fibers: Mossy fibers · Climbing fiber · Parallel fiber

White matter

Internal

Arbor vitae

Peduncles

Inferior (medulla): Dorsal spinocerebellar tract · Olivocerebellar tract · Cuneocerebellar tract · Juxtarestiform body (Vestibulocerebellar tract)

Middle (pons): Pontocerebellar fibers
Superior (midbrain): Ventral spinocerebellar tract · Dentatothalamic tract · Trigeminocerebellar fibers

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)

v · d · eHuman brain, rhombencephalon, metencephalon: pons (TA A14.1.05.101–604, GA 9.785)

Dorsal/
(tegmentum)

Surface

Cerebellopontine angle · Superior medullary velum · Sulcus limitans · Medial eminence · Facial colliculus

White: Sensory/ascending

Trapezoid body/VIII · Trigeminal lemniscus (Dorsal trigeminal tract, Ventral trigeminal tract) · Medial lemniscus · Lateral lemniscus

MLF, III, IV and VI: Vestibulo-oculomotor fibers
Anterior trigeminothalamic tract · Central tegmental tract

White: Motor/descending

ICP (Vestibulocerebellar tract)
MLF, III, IV and VI: Vestibulospinal tract (Medial vestibulospinal tract, Lateral vestibulospinal tract)

Grey: Cranial nuclei

afferent: GSA: Principal V/Spinal V · VIII-c (Dorsal, Anterior)/VIII-v (Superior)
efferent: SVE: Motor V · VII · GSE: VI · GVE: VII: Superior salivary nucleus

Other grey

Apneustic center · Pneumotaxic center (Medial parabrachial nucleus) · Lateral parabrachial nucleus · Superior olivary nucleus · Caerulean nucleus

Ventral/
(base)

Grey

Pontine nuclei

White: Motor/descending

Corticospinal tract · Corticobulbar tract · Corticopontine fibers
MCP (Pontocerebellar fibers)

Surface

Basilar sulcus

Other grey: Raphe/
reticular
Reticular formation (Caudal, Oral, Tegmental, Paramedian) · Raphe nuclei (Median)

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)

v · d · eBrain and spinal cord: neural tracts and fasciculi

Sensory/
ascending

PCML

1°: Pacinian corpuscle/Meissner's corpuscle → Gracile fasciculus/Cuneate fasciculus → Gracile nucleus/Cuneate nucleus

2°: → sensory decussation/arcuate fibers (Posterior external arcuate fibers, Internal arcuate fibers) → Medial lemniscus/Trigeminal lemniscus → Thalamus (VPL, VPM)
3°: → Posterior limb of internal capsule → Postcentral gyrus

Anterolateral/
pain

Fast/lateral

1° (Free nerve ending → A delta fiber) → 2° (Anterior white commissure → Lateral and Anterior Spinothalamic tract → Spinal lemniscus → VPL of Thalamus) → 3° (Postcentral gyrus) → 4° (Posterior parietal cortex)
2° (Spinotectal tract → Superior colliculus of Midbrain tectum)

Slow/medial

1° (Group C nerve fiber → Spinoreticular tract → Reticular formation) → 2° (MD of Thalamus) → 3° (Cingulate cortex)

Motor/
descending

Pyramidal

flexion: Primary motor cortex → Posterior limb of internal capsule → Decussation of pyramids → Corticospinal tract (Lateral, Anterior) → Neuromuscular junction

Extrapyramidal

flexion: Primary motor cortex → Genu of internal capsule → Corticobulbar tract → Facial motor nucleus → Facial muscles

flexion: Red nucleus → Rubrospinal tract

extension: Vestibulocerebellum → Vestibular nuclei → Vestibulospinal tract

extension: Vestibulocerebellum → Reticular formation → Reticulospinal tract
Midbrain tectum → Tectospinal tract → muscles of neck

Basal ganglia

direct: 1° (Motor cortex → Striatum) → 2° (GPi) → 3° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 4° (Thalamocortical radiations → Supplementary motor area) → 5° (Motor cortex)

indirect: 1° (Motor cortex → Striatum) → 2° (GPe) → 3° (Subthalamic fasciculus → Subthalamic nucleus) → 4° (Subthalamic fasciculus → GPi) → 5° (Lenticular fasciculus/Ansa lenticularis → Thalamic fasciculus → VL of Thalamus) → 6° (Thalamocortical radiations → Supplementary motor area) → 7° (Motor cortex)
nigrostriatal pathway: Pars compacta → Striatum

Cerebellar

Afferent

Vestibular nucleus → Vestibulocerebellar tract → ICP → Cerebellum → Granule cell

Pontine nuclei → Pontocerebellar fibers → MCP → Deep cerebellar nuclei → Granule cell
Inferior olivary nucleus → Olivocerebellar tract → ICP → Hemisphere → Purkinje cell → Deep cerebellar nuclei

Efferent

Dentate nucleus in Lateral hemisphere/pontocerebellum → SCP → Dentatothalamic tract → Thalamus (VL) → Motor cortex

Interposed nucleus in Intermediate hemisphere/spinocerebellum → SCP → Reticular formation, or → Cerebellothalamic tract → Red nucleus → Thalamus (VL) → Motor cortex
Fastigial nucleus in Flocculonodular lobe/vestibulocerebellum → Vestibulocerebellar tract → Vestibular nucleus

Bidirectional:
Spinocerebellar

Unc. prop.

lower limb → 1° (muscle spindles → DRG) → 2° (Posterior thoracic nucleus → Dorsal/posterior spinocerebellar tract → ICP → Cerebellar vermis)
upper limb → 1° (muscle spindles → DRG) → 2° (Accessory cuneate nucleus → Cuneocerebellar tract → ICP → Anterior lobe of cerebellum)

Reflex arc

lower limb → 1° (Golgi tendon organ) → 2° (Ventral/anterior spinocerebellar tract→ SCP → Cerebellar vermis)
upper limb → 1° (Golgi tendon organ) → 2° (Rostral spinocerebellar tract → ICP → Cerebellum)

M: CNS

anat(n/s/m/p/4/e/b/d/c/a/f/l/g)/phys/devp

noco(m/d/e/h/v/s)/cong/tumr, sysi/epon, injr

proc, drug(N1A/2AB/C/3/4/7A/B/C/D)

M: PNS

anat(h/r/t/c/b/l/s/a)/phys(r)/devp/prot/nttr/nttm/ntrp

noco/auto/cong/tumr, sysi/epon, injr

proc, drug(N1B)

Categories:
Cerebrum
Neuroanatomy stubs

Brain: Pontocerebellar fibers

Scheme showing the connections of the several parts of the brain.
Latin	fibrae pontocerebellares
NeuroNames	ancil-408

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Look at other dictionaries:

pontocerebellar fibers — fibrae pontocerebellares … Medical dictionary
Corticopontine fibers — Brain: Corticopontine fibers Coronal section through mid brain. 1. Corpora quadrigemina. 2. Cerebral aqueduct. 3. Central gray stratum. 4. Interpeduncular space. 5. Sulcus lateralis. 6. Substantia nigra. 7. Red nucleus of … Wikipedia
Posterior external arcuate fibers — Diagram showing the course of the arcuate fibers. (Testut.) 1. Medulla oblongata anterior surface. 2. Anterior median fissure. 3. Fourth ventricle. 4. Inferior olivary nucleus, with the accessory olivary nuclei. 5. Gracile nucleus … Wikipedia
corticopontocerebellar fibers — the corticopontine fibers and pontocerebellar fibers considered together; see fibrae corticopontinae and fibrae pontocerebellares … Medical dictionary
Middle cerebellar peduncle — Brain: Middle cerebellar peduncle Dissection showing the projection fibers of the cerebellum. (Middle peduncle labeled at upper right.) Latin pedunculus cerebellaris medius NeuroNames … Wikipedia
Dentate nucleus — This article is about the dentate nucleus. For other dentate, see Dentate. Brain: Dentate nucleus Sagittal section through right cerebellar hemisphere. The right olive has also been cut sagitally. (Dentate nucleus labeled at top.) Latin nucleus… … Wikipedia
Dorsal longitudinal fasciculus — Brain: Dorsal longitudinal fasciculus Latin fasciculus longitudinalis posterior; fasciculus longitudinalis dorsalis NeuroLex ID birnlex 986 The dorsal longitudinal fasciculus (DLF) (not to be confused with the medial longitudinal fasciculus, nor… … Wikipedia
Corticospinal tract — Pyramidal tract redirects here. This page refers to the nerve fibres underlying the pyramids. For the actual area of the brain, Pyramids, see Pyramid of medulla oblongata. Brain: Corticospinal tract Deep dissection of brain stem. Lateral view. (… … Wikipedia
Corticobulbar tract — Brain: Corticobulbar tract Components and location of the corticobulbar tract. Latin tractus corticonuclearis NeuroNames … Wikipedia
Olivocerebellar tract — Brain: Olivocerebellar tract Transverse section of medulla oblongata below the middle of the olive. (Cerebello olivary fibers visible at center right.) Latin t. olivocerebellaris NeuroNames … Wikipedia

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