Cerebellum Flashcards
What is the anatomical region, principle input and destination, deep nucleus, and function of the vestibolucerebellum?
REGION: Flocculonodular lobe, INPUT: Vestibular sensory cells. DESTINATION: Axial motor neurons, NUCLEUS: Vestibular, FUNCTION: Axial control, vestibular reflex (balance, eye movement)
What is the anatomical region, principle input and destination, deep nucleus, and function of the spinocerebellum vermis?
REGION: Vermis, INPUT: Visual, auditory, somatosensory, vestibular, DESTINATION: Medial Descending System, NUCLEUS: Fastigial, FUNCTION: Axial motor control (posture, locomotion, gaze)
What is the anatomical region, principle input and destination, deep nucleus, and function of the spinocerebellum paravermis?
REGION: Paravermis, INPUT: Spinal afferents, DESTINATION: Contralateral Red Nucleus/Lateral system, NUCLEUS: Interposed, FUNCTION: Distal motor control.
What is the anatomical region, principle input and destination, deep nucleus, and function of the cerebrocerebellum?
REGION: Lateral hemispheres, INPUT: Cortical afferents, DESTINATION: Integration areas, VA/VL Thalamus->Cortex, NUCLEUS: Dentate, FUNCTION: Initiation, planning, movement
What are the three gross divisions of the cerebellum?
Vermis, 2 hemishperes
What are the three principle information processing cells of the cerebellum?
Granule Cells - Parallel cells, axon bifurcates and extends through dendrites of perking cells, Perkinje cells - 2-D cells lined up in order on top of hills, DCN cells
What are three general functions that are affected by lesions in the cerebellum?
Synergy, equilibrium, tone
What are three types of interneurons in the cerebellum?
Basket, satellite, golgi
What is the general function of the flocculonodular lobe?
Modulating the vestibular system, particularly the vestibuloccular reflex (VOR) which is the most important function of the lobe and axial muscular control.
What is the general function of the vermal region?
The verbal region integrates vestibular, visual, and proprioceptive information and outputs to the descending systems that maintain posture, locomotion, and gaze: The Medial/Anterior Corticospinal System
What is the general function of the paravermal region?
The paravermal region calibrates inputs of proprioception (from Clarke’s nucleus) and sends it to contralateral Red nucleus which then regulates distal musculature: Lateral system.
