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Brain Tracts, Trigeminothalamic Tracts, START HERE, Start Here, Tabes…

- - - - Central Tegmentral Tract (CTT
        in VPM (3 neurons)
        
        Solitary Tract
        In Solitary Nucleus 2 neuron)
        
        Afferent Fibers (CN VII, IX, X)
  - - - Rostral ventral Medulla
        (nucleus raphe-magnus)
        
        Dorsolateral funiculus
        
        DRG
- - - - Posterior Limb of
        Internal Capsule
        
        Pyramidal Decussation
        
        Lateral Corticospinal
        Tract (85-90&)
        
        Ventral Horn
        Motor
        
        Lower Motor Neuron (Lamina 9)
        TO
        Skeletal Muscle
  - - - Cranial Nerve Nuclei
        IPSILATERA
        
        Nucleus Ambiguus
        [Middle Medulla between
        CNX/XII Nucleus)
        
        CN IX, CN X
        
        CN V Nucleus
        [mid-pons]
        
        CN V3
        
        Facial Nerve Nucleus
        
        CN VII
        Nucleus
        
        Bilateral Inervation:
        Upper Face
        
        CN VII
        Nucleus
        
        Contralateral Inervation:
        Lower Face
        Not bilateral
        
        Hypoglossal
        Nucleus
        [Middle Medulla]
        
        CN XII
      - Primary Motor Cortex
        BILATERAL
      - GSE
        CN III, IV, VI, XI, XII
        Lower face
      - SVE (bilateral invervation)
        CN V, VII, IX, X
        Upper face
- - - - 2: vermis of cerebullum
        via inferior cerebellar peduncle
        
        Deep cerebellar Nuclei
        (via Purkinje cells)
- - - - 2 order ascend as medial lemniscus
        (ML)
        
        Ventral posterolateral nucleus of
        thalamus (VPL) contralateral
        
        3 order ascend
        posterior limb of internal capsule
        
        Primary somatosensory cortex
        (post central gyrus of parietal lobe/ 3,1,2)
        Layer 4
- - - - 3 cell in thalamus to cortex
        VPL of Thalamus
- - - - Ascended spinothalamic tract
        
        VPL, VPM,
        other nuclues
        
        3: Postcentral Gyrus
        S1
- - - - Ascends
        
        ML
        
        VPM
        
        Somatosensory cortex S1
        (VIA internal capsule & corodna radiata)