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Brainstem and Cerebellum Overview
Charles Carrasco, MD; Karen L. Salzman, MD
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Terminology

  • Abbreviations

    • Cerebrospinal fluid (CSF)
    • Cranial nerves (CN): Oculomotor nerve (CN3), trochlear nerve (CN4), trigeminal nerve (CN5), abducens nerve (CN6), facial nerve (CN7), vestibulocochlear nerve (CN8), glossopharyngeal nerve (CN9), vagus nerve (CN10), accessory nerve (CN11), hypoglossal nerve (CN12)
  • Synonyms

    • Classical nomenclature (simplified nomenclature)
      • Superior (tentorial), inferior (suboccipital), anterior (petrosal) cerebellar surfaces
      • Primary (tentorial), horizontal (petrosal), prebiventral/prepyramidal (suboccipital) cerebellar fissures
  • Definitions

    • Posterior fossa: Houses brainstem and cerebellum, below tentorium cerebelli (infratentorial)
    • Brainstem: Composed of midbrain (mesencephalon), pons and medulla oblongata
    • Cerebellum: Largest part of hindbrain, integrates coordinations & fine-tuning of movement & regulation of muscle tone

Gross Anatomy

  • Overview

    • Anatomy Relationships

      Related Anatomy
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      Related Differential Diagnoses
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      References
      Tables

      Tables

      Terminology

      • Abbreviations

        • Cerebrospinal fluid (CSF)
        • Cranial nerves (CN): Oculomotor nerve (CN3), trochlear nerve (CN4), trigeminal nerve (CN5), abducens nerve (CN6), facial nerve (CN7), vestibulocochlear nerve (CN8), glossopharyngeal nerve (CN9), vagus nerve (CN10), accessory nerve (CN11), hypoglossal nerve (CN12)
      • Synonyms

        • Classical nomenclature (simplified nomenclature)
          • Superior (tentorial), inferior (suboccipital), anterior (petrosal) cerebellar surfaces
          • Primary (tentorial), horizontal (petrosal), prebiventral/prepyramidal (suboccipital) cerebellar fissures
      • Definitions

        • Posterior fossa: Houses brainstem and cerebellum, below tentorium cerebelli (infratentorial)
        • Brainstem: Composed of midbrain (mesencephalon), pons and medulla oblongata
        • Cerebellum: Largest part of hindbrain, integrates coordinations & fine-tuning of movement & regulation of muscle tone

      Gross Anatomy

      • Overview

        • Anatomy Relationships