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Brain stem 2014

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Brain stem 2014

  1. 1. BRAIN STEM Dr P.S. Deb MD, DM Director Neurology GNRC Hospitals Guwahati, Assam, India
  2. 2. Brainstem Development Anatomical al (Ant-Post) Mesencephal Rhombencep on halon Midbrain Pons Medulla Basal Temgentum Physiological Tectum White matter Descending Ascending Gray matter Cranial nerves Other nuclei
  3. 3. DEVELOPMENT DIVISION OF NERVOUS SYSTEM Four stages in early development of brain and cranial nerves (times are approximate). A: 31/2 weeks. B: 41/2 weeks. C: 7 weeks. D: 11 weeks
  4. 4. BRAIN STEM DEVELOPMENT  Schematic illustration of the widening of the central cavity in the lower brain stem during development.
  5. 5. BRAIN STEM ANATOMY  Gross anatomy of brainstem and it's division     Medulla at     Olivary nucleus Sensory decussation Pyramidal decussation Pons    Anterior Posterior Lateral Rostral pons Caudal pons Midbrain at   Superior Colliculus Inferior Colliculus
  6. 6. BRAIN STEM STRUCTURE
  7. 7. SUPERFICIAL AND DEEP DISSECTION
  8. 8. BRAIN STEM LATERAL VIEW
  9. 9. BRAINSTEM DISSECTION
  10. 10. MIDBRAIN LEVELS
  11. 11. MIDBRAIN AT INFERIOR COLLICULUS LEVEL
  12. 12. PONS
  13. 13. UPPER PONS
  14. 14. MIDDLE PONS
  15. 15. LOWER PONS
  16. 16. MEDULLA
  17. 17. BRAIN STEM NUCLEI
  18. 18. CRANIAL NERVE NUCLEI
  19. 19. MOTOR AND SENSORY NERVES
  20. 20. FACIAL NERVE NUCLEI AND FASCICLE
  21. 21. NUCLEUS OF SOLITARY TACT
  22. 22. TRIGEMINAL NUCLEAR CONNECTION
  23. 23. DORSAL NUCLEUS OF THE VAGUS
  24. 24. Precerebellar Nuclei 1. Red Nucleus 2. Vestibular Nucleus 3. Inferior Olivary Nucleus 4. Perhypoglossal Nuclei 5. Accessory Cuneate Nucleus
  25. 25. VESTIBULOSPINAL TRACT
  26. 26. CROSS SECTIONS OF THE BRAINSTEM – MAIN RETICULAR NUCLEI
  27. 27. POSITION OF THE RETICULAR FORMATION IN THE BRAINSTEM
  28. 28. THE CONNECTIONS OF THE LATERAL SPINOTHALAMIC TRACT, INCLUDING THOSE MADE WITH THE RETICULAR FORMATION
  29. 29. CORTICORETICULAR PROJECTIONS
  30. 30. ASCENDING AND DESCENDING AXONS IN RETICULAR FORMATION
  31. 31. THANK YOU

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