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AKA Brainstem

AKA Brainstem. Foramen Magnum. BRAINSTEM/ HINDBRAIN. Bainstem (Medulla) critical functions. Ascending and Descending Fiber Tracts Cranial Nerve Nuclei All parasympathetic tone HR Temp BP Etc Relative Inplasticity. Cranial nerve roots. Ascending ( and descending fibers).

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AKA Brainstem

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  1. AKA Brainstem

  2. Foramen Magnum

  3. BRAINSTEM/ HINDBRAIN

  4. Bainstem (Medulla) critical functions • Ascending and Descending Fiber Tracts • Cranial Nerve Nuclei • All parasympathetic tone • HR • Temp • BP • Etc • Relative Inplasticity

  5. Cranial nerve roots

  6. Ascending ( and descending fibers)

  7. Pons and Cerebellum The RAS runs from medulla up to midbrain

  8. Cerebellum • Direction • Amplitude • Force • Timing • Posture • Motor learning

  9. The “Reticular activating system” Many tiny brain nuclei collectively involved in modulation of arousal

  10. The Raphe nucleus:part of the RAS involved in sleep, dreaming…an area likely affected by SSRI’s and some hallucinogens

  11. The PONS and the RAS- LC

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