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L R L R Pons Medulla PONS MEDULLA Pons Med. Transition from medulla to pons inferior cerebellar peduncle medial lemniscus inferior olive pyramid pyramid Fig. 8 Transition from medulla to pons cerebellum fourth ventricle middle cerebellar peduncle middle cerebellar peduncle PONTINE TEGMENTUM spinothalamic medial lemniscus corticospinal tract PONTINE BASE corticospinal tract LOWER (CAUDAL) PONS Cross-sectional organization of the lower pons Fig. 9 em. L . d e M Cortico Spinal LOWER (CAUDAL) PONS Corticopontine Corticobulbar CEREBRAL PEDUNCLE Corticospinal PONTINE BASE Middle Cerebellar peduncle pontocerebellar MEDULLA Pyramid Fig, 10 Pontine Base LOWER (CAUDAL) PONS cerebellum middle cerebellar peduncle abducens nucelus VI facial nucleus VII V spinal trigeminal nucleus corticospinal tract Abducens nerve Fig. 11 Cross section of lower pons Facial nerve Abducens VI VII V Facial ADduct Oculomotor MEDIAL RECTUS III MIDBRAIN MEDIAL LONGITUDINAL FASCICULUS (MLF) PONS VI Abducens LATERAL RECTUS ABduct Fig. 12 Lateral gaze cerebellum middle cerebellar peduncle abducens nucelus VI facial nucleus VII V spinal trigeminal nucleus corticospinal tract Abducens nerve Fig. 11 Cross section of lower pons Facial nerve Corticobulbar innervation to the facial nucleus LEFT CORTEX VII Left Facial nucleus RIGHT CORTEX VII Upper face Lower face Right Facial nucleus Fig. 13 corticobulbar innervation to facial nuclei corneal reflex cerebellum middle cerebellar peduncle abducens nucelus VI facial nucleus VII V spinal trigeminal nucleus corticospinal tract Facial nerve superior salivatory nucleus- Nerve 7 Submandibular Abducens nerve Sublingual Lacrimal Fig. 11 Cross section of lower pons MID PONS cerebellum superior cerebellar peduncel fourth ventricle MLF motor nucleus of V main sensory nucleus of V spinothalamic medial lemniscus corticospinal tract Fig. 14 cross-sectional organization of the upper pons ventral trigeminothalamic tract dorsal trigeminothalamic tract midbrain level of Fig. 14 motor V trigeminal nerve (V) pons facial nucleus main sensory nucleus of V medulla spinal cord nucleus ambiguus spinal trigeminal nucleus Fig. 15 Sensory nucleus of V mesencephalic nucleus of V midbrain motor nucleus of V pons facial nucleus medulla spinal cord nucleus ambiguus trigeminal nerve Main sensory nuclues of V Motor nucleus of V Mid Pons L R
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