Neuro W9 Flashcards

Just Theory No Anatomy

What supplies the Fastigial Nucleus?

Flocculonodular Lobe & Vermis

What Supplies the Interposed Nucleus

Paravermal Zone

What supplies the Dentate Nucleus

Lateral hemisphere

Vestibulocerebellum: Name the Input, Cortical Structure & associated deep nucleus

Input: Vestibular System

CS: Flocculonodular Lobe

Deep Nucleus: Fastigual Nucleus

Spinocerebellum: Name the Input, Cortical Structure & associated deep nucleus

Input: Proprioceptive SCT’s & Motor Cortices

CS: Vermis & Paravermal Zone

Deep Nucleus: Fastigial & Interposed Nuclei

Cerebrocerebellum: Name the Input, Cortical Structure & associated deep nucleus

Input: Motor Cortices

CS: Lateral Hemisphere

Deep Nucleus: Dentate Nucleus

What are the alternative Names for the Functional Zones

Vestibulo —> Archiecerellum (Ancient - Oldest Known Zone)

Spino —> Paleocerebellum

Cerebrocerebellum —> Neocerebellum (Neo = Newest)

Vestibulocerebellum Division Function

Coordination of Trunk & Proximal muscles to maintain posture and balance & coordination of eye movement

Spinocerebellum Division Function

Coordination of trunk and proximal muscles to maintain posture and balance During Execution of movement

Cerebrocerebellum Function:

Coordination, planning, timing, initiation of voluntary movement of the limbs before execution

Outline Vestibulocerebellum pathway to movement: (Input, Nuclei, Output, Tract Result)

Input: CNVIII & Vestibular Nuclei to Flocculonodular Lobe via ICP

Nuclei: Flocculo —> Fastigial Nucleus (FF)

Output: Via ICP to Vestibular Nuclei & Reticular Formation

Tract: Vestibulo & Reticulospinal tracts

Result: Maintain Posture & Balance

Outline Spinocerebellum pathway to movement (Input, Nuclei, Output, Tract Result)

Input: VSC,DSC,PC,CC Tracts via MPC to Vermis & Paravermal zone

Nuclei: Fastigial & Interposed Nuclei

Fastigial:

Output: Vestibular Nuclei & Reticular Formation via ICP

Tracts: Vestibulospinal & Reticulospinal

Result: Maintain Posture & Balance During Movement

Interposed:

Output: Red Nucleus & VA/VL Thalamus via SCP (Then motor cortices)

Tract: Corticospinal

Outline cerebrocerebellum pathway to movement (Input, Nuclei, Output, Tract Result)

Input: pontocerebellar tract to Lateral Hemisphere via MCP

Nuclei: Dentate Nucleus

Output: Red Nucleus & VA/VL Thalamus via SCP (Then motor cortices)

Tract: Corticospinal

Result: Coordination, Planning, Timing of movement Before Execution

Cerebellar Dysfunction is known as what (One Term)

Ataxia [without order]

Lateral Cerebellar Lesions mainfest how?

Distal Limb and Speech Ataxia

• HYPOtonia & HYPOreflexia

• Intentional Tremor

• Dysmetria [Abnormal Measuring]

• Dysarthia [Abnormal Speech]

• Dyadiachokinesia [Abnormal alternating movements]

Medially Located Cerebellar Lesions manifest how?

Trunk & Proximal Limb Ataxia & Nystagmus

• Difficulty Maintaining Balance

• Ataxic Gait

• Abnormal Nystagmus

Dysdiachokinesia - Lateral or Medial Lesion?

Lateral

I have Nystagmus - Where is my cerebellum fucked?

Medially

What major structures does AICA Supply?

Peduncles & Flocculi