Cerebellum Anatomy

Aka: Cerebellum Anatomy, Cerebellum

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II. Definitions

  1. Cerebellum
    1. Key function is coordinated movement
    2. Makes use of sensory input including proprioception to adjust movements
    3. Disorders of the Cerebellum include Tremor, Nystagmus and Ataxia

III. Anatomy: General

  1. Communication with Brainstem
    1. Superior peduncle
    2. Middle peduncle
    3. Inferior peduncle
  2. Vascular
    1. Anterior Inferior Cerebellar Artery
    2. Posterior Inferior Cerebellar Artery
    3. Superior Cerebellar Artery

IV. Anatomy: Images

  1. neuroCerebellumSuperiorGrayBB702.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  2. neuroCerebellumInferiorGrayBB703.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  3. neuroCerebellumXsAtVermusGrayBB704.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  4. neuroCerebellumGrayBB705.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  5. neuroCerebellumXsFoliumGrayBB706.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  6. neuroCerebellumXsGrayBB707.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)
  7. neuroCerebellumGrayBB708.gif Lewis (1918) Gray's Anatomy 20th ed (in public domain at Yahoo or BartleBy)

V. Exam

  1. See Cerebellar Function

VI. Signs: Cerebellar Lesion Effects

  1. Ataxia
    1. See Ataxia
    2. See Acute Cerebellar Ataxia
    3. See Cerebellar Gait
    4. Altered Posture and gait
      1. Patient falls on the same side as a CNS Lesion
    5. Incoordinated movement
      1. Dysmetria (overshooting on Finger-Nose-Finger Test)
      2. Dysdiadochokinesia (difficult Rapid Alternating Movements)
      3. Scanning speech (irregularly spaced sounds, words, phrases)
  2. Tremor
    1. See Cerebellar Tremor
    2. Intention Tremor (during purposeful movement)
  3. Nystagmus
    1. See Nystagmus
  4. Deep Tendon Reflexes
    1. Decreased Deep Tendon Reflexes on the affected side
  5. Asthenia
    1. Muscles Fatigue more easily with use

VII. References

  1. Goldberg (2014) Clinical Neuroanatomy, Medmaster, p. 61-4
  2. Goldberg (2021) Clinical Physiology, Medmaster, Miami, p. 106
  3. Netter (1997) Atlas Human Anatomy, ICON Learning, p. 107
  4. Newton (1994) Am Fam Physician 49(4): 787-97 [PubMed]

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