ENSIKLOPEDIA Cari Tekan Enter untuk memulai pencarian cepat. Kembali ke Ensiklopedia Arsip Wikipedia Indonesia Geniculate fibers Geniculate fibersFibers in the region of the genu of the internal capsule Geniculate fibersThe motor tract.Anatomical terms of neuroanatomy[edit on Wikidata] The geniculate fibers are the fibers in the region of the genu of the internal capsule; they originate in the motor part of the cerebral cortex, and, after passing downward through the base of the cerebral peduncle with the cerebrospinal fibers, undergo decussation and end in the motor nuclei of the cranial nerves of the opposite side.[1] References ↑ Zaidi, Faisal; Todd, Krista; Enquist, Lynn; Whitehead, Mark C. (December 20, 2008). "Types of Taste Circuits Synaptically Linked to a Few Geniculate Ganglion Neurons". Journal of Comparative Neurology. 511 (6): 753–772. doi:10.1002/cne.21869. PMC 2613300. PMID 18925565. This article incorporates text in the public domain from page 836 of the 20th edition of Gray's Anatomy (1918) vteAnatomy of the cerebral cortex of the human brainFrontal lobeSuperolateralPrefrontal Superior frontal gyrus 4 6 8 Middle frontal gyrus 9 10 46 Inferior frontal gyrus: 11 47-Pars orbitalis Broca's area 44-Pars opercularis 45-Pars triangularis Superior frontal sulcus Inferior frontal sulcus Precentral Precentral gyrus Precentral sulcus Medial/inferiorPrefrontal Superior frontal gyrus 4 6 Medial frontal gyrus 8 9 Paraterminal gyrus/Paraolfactory area 12 Straight gyrus 11 Orbital gyri/Orbitofrontal cortex 10 11 12 Ventromedial prefrontal cortex 10 Subcallosal area 25 Olfactory sulcus Orbital sulcus Precentral Paracentral lobule 4 Paracentral sulcus Both Primary motor cortex 4 Premotor cortex 6 Supplementary motor area 6 Supplementary eye field 6 Frontal eye fields 8 Parietal lobeSuperolateral Superior parietal lobule 5 7 Inferior parietal lobule 40-Supramarginal gyrus 39-Angular gyrus Parietal operculum 43 Intraparietal sulcus Medial/inferior Paracentral lobule 1 2 3 5 Precuneus 7 Marginal sulcus Both Postcentral gyrus/Primary somatosensory cortex 3, 1 and 2 Secondary somatosensory cortex 5 Posterior parietal cortex 7 Occipital lobeSuperolateral Occipital pole of cerebrum Occipital gyri Lateral occipital gyrus 18 19 Lunate sulcus Transverse occipital sulcus Medial/inferior Visual cortex 17 Cuneus Lingual gyrus Calcarine sulcus Temporal lobeSuperolateral Transverse temporal gyrus/Auditory cortex 41 and 42 Superior temporal gyrus 38 22/Wernicke's area (Planum temporale) Superior temporal sulcus Middle temporal gyrus 21 Medial/inferior Occipitotemporal sulcus Fusiform gyrus 37/Fusiform face area Visual word form area Medial temporal lobe 27 28 34 35 36 Inferior temporal sulcus Inferior temporal gyrus 20 Interlobarsulci/fissuresSuperolateral Central (frontal+parietal) Lateral (frontal+parietal+temporal) Parieto-occipital Preoccipital notch Medial/inferior Longitudinal fissure Cingulate (frontal+cingulate) Collateral (temporal+occipital) Callosal sulcus Limbic lobeParahippocampal gyrus anterior Entorhinal cortex Perirhinal cortex Postrhinal cortex Posterior parahippocampal gyrus Prepyriform area Cingulate cortex/gyrus Subgenual area 25 Anterior cingulate 24 32 33 Posterior cingulate 23 31 Isthmus of cingulate gyrus: Retrosplenial cortex 26 29 30 Hippocampal formation Hippocampal sulcus Fimbria of hippocampus Dentate gyrus Rhinal sulcus Other Indusium griseum Uncus Amygdala Insular cortex Insular cortex General Operculum Poles of cerebral hemispheres Some categorizations are approximations, and some Brodmann areas span gyri. vteBrain and spinal cord: neural tracts and fasciculiSensoryDCML1°: Pacinian corpuscle/Meissner's corpuscle → Posterior column (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/painFast/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° (Spinomesencephalic tract → Superior colliculus of Midbrain tectum) Slow/medial 1° (Group C nerve fiber → Spinoreticular tract → Reticular formation) → 2° (MD of Thalamus) → 3° (Cingulate cortex) MotorPyramidal flexion: Primary motor cortex → Posterior limb of internal capsule → Decussation of pyramids → Corticospinal tract (Lateral, Anterior) → Neuromuscular junction Extrapyramidalflexion: 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 gangliadirect: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 CerebellarAfferent Vestibular nuclei → 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 nuclei Bidirectional:SpinocerebellarUnconscious proprioception 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) This neuroanatomy article is a stub. 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