tallo cerebral
TRANSCRIPT
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Tallo cerebral
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Configuracion interna del tallo cerebral
• Bulbo raquideo• Vías ascendentes (sensitivas)• Tractos gracilis y cuneatus• Nucleos gracilis y cuneatus• Fibras arqueadas internas• Decusación de los lemniscos mediales• Lemnisco medial• Lemnisco espinal (tractos: espinotalamicos y espinotectal)
• Vías descendentes (motoras)• Pirámides• Decusación piramidal
• Vías cerebelosas• Nucleo cuneato accesorio• Nucleo olivar inferior• Tracto tegmental central• Nucleo reticular lateral• Tracto espinocerebeloso posterior• Tracto espinocerebeloso anterior• Pedúnculo cerebeloso inferior
Núcleo y tractos de los nervios cranealesFasciculo longitudinal medialTracto solitarioNúcleo solitarioNúcleo motor dorsal del vagoNúcleo salivatorio inferiorNúcleo del hipoglosoNúcleo ambiguoRaíz bulbar del nervio accesorioTracto trigeminal espinalNúcleo trigeminal espinalNúcleos vestibulares medial e inferiorArea postrema
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1. Anterior median fissure. 2. Fourth ventricle. 3. Formatio reticularis, with 3’, its internal part (reticularis alba), and 3’’, its external part (reticularis grisea). 4. Raphé. 5. Pyramid. 6. Lemniscus. 7. Inferior olivary nucleus with the two accessory olivary nuclei. 8. Hypoglossal nerve, with 8’, its nucleus of origin. 9. Vagus nerve, with 9’, its nucleus of termination. 10. Lateral dorsal acoustic nucleus. 11. Nucleus ambiguus (nucleus of origin of motor fibers of glossopharyngeal, vagus, and cerebral portion of spinal accessory). 12. Gracile nucleus. 13. Cuneate nucleus. 14. Head of posterior column, with 14’, the lower sensory root of trigeminal nerve. 15. Fasciculus solitarius. 16. Anterior external arcuate fibers, with 16’, the nucleus arcuatus. 17. Nucleus lateralis 18. Nucleus of fasciculus teres. 19. Ligula.
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Section of the medulla oblongata at about the middle of the olive.
(Formatio reticularis grisea and formatio reticularis alba labeled at left.)
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Configuracion interna del tallo cerebral
Protuberancia • Vías sensoriales• Nucleos cocleares ventral y dorsal• Cuerpo trapezoideo• Núcleo olivar superior• Lemnisco lateral• Lemnisco medial• Lemnisco trigeminal
• Vías motoras• Tracto corticobulbar• Tracto corticoespinal• Tracto corticopontino
• Vías cerebelosas• Tracto tegmental central• Cuerpo yuxtarestiforme• Pedúnculo cerebeloso medio• Pedúnculo cerebeloso superior
• Núcleos de los nervios craneales• Núcleos cocleares ventral y dorsal• Núcleos vestibulares medial, lateral y superior• Fascículo longitudinal medial• Núcleo del nervio abducents• Núcleo del nervio facial• Núcleo salivatorio superior• Núcleo y tracto trigeminoespinal• Núcleo motor del nervio trigémino• Núcleo sensorial principal del nervio trigémino• Núcleo mesencefálico del nervio trigémino• Locus ceruleus
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Coronal section of the pons, at its upper part. (Formatio reticularis labeled at left.)
Porcion Basilar
Tegmentum
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Configuracion interna del tallo cerebral
• Mesencéfalo (a nivel de colículos inferiores.)• Colículo inferior• Núcleo y comisura del colículo inferior• Lemnisco lateral• Brazo colicular inferior• Acueducto cerebral• Sustancia gris periacueductal• Núcleo troclear• Fascículo longitudinal medial• Decusación de los pedúnculos cerebelosos superiores (PCS)• Núcleo interpeduncular• Sustancia nigra• Lemnisco medial• Lemnisco espinal• Tracto tegmental central• Bases pedúnculares
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Configuracion interna del tallo cerebral
• Mesencéfalo (a nivel de colículos superiores.)• Colículos superiores• Núcleo y comisura colicular superior• Brazo colicular superior• Acueducto cerebral• Sustancia gris periacueductal• Nucleo del nervio oculomotor• Núcleo parasimpático del nervio oculomotor• Fascículo longitudinal medial• Tracto tegmental central• Núcleo rojo• Lemnisco medial• Lemnisco espinal• Sustancia nigra• Bases pedúnculadas• Nivel comisural posterior, comisura posterior• Núcleo pretectal
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Cuarto ventrículo