Cerebellum Part 2: Flashcards
Input to and output from the cerebellum is via the ?
cerebellar peduncles
T/F; the ventral spinocerbellar tract originates from interneurons around the margins of central gray matter
true
Does the ventral spinocerbellar tract cross over in the spinal cord ?
yes
T/F: The ventral spinocerbellar tract enters the inferior cereal penducle
false: superior
Rostral spinocerebellar tract coveys info about the?
information is about upper limb
cuneocerebellar tract is travelling in fasciculus ______ pathway
cuneatus
which 2 spinocerebellar tracts convey info about the upper limb?
cuneocerebellar tract and rostral
Corticopontine fibres: send projections to _____ nuclei
pontine
The pontocerebllar pathway has fibres cross midline in pons and enter contralateral ?
middle cerebellar peduncle
. Vestibular Inputs:vestibular neurons in vestibular nuclei send projections to ?
vermis and floculonodular lobe
Olivocerebellar fibres: provide input for _____ and ____ functions of the cerebellum
learning and memory functions
From the Lateral zones:
• purkinje fibres project to the ______ nucleus
deneate
T/F: Lateral zones: reach contralateral VPL nucleus of thalamus
ventral lateral (VL)
which zone has pathways between pre-frontal cortex and cerebellum to influence cognitive function, such as mental problem-solving?
lateral
Intermediate zones: influence lateral or medial corticospinal tract
lateral
The Intermediate zones also project to contralateral red nucleus in midbrain to influence which tract?
rubrospinal tract
define intention tremor
terminal tremor at the end of movement:
Vermis has purkinje fibres that project to the_____ nucleus
fastigial
Lesions to the vermis can cause?
disturbances of equilibrium and balance
the floculonodular lobe receives its inputs from the _______ nuclei
vestibular
T/F: outputs from the vestibular nucle project directly back to vestibular nuclei
true
Lesions to the Floculonodular Lobe can cause ?
- nystagmus
- vestibulo-ocular reflex disruption
massive integration of information in the cerebellum allows the cerebellum to function as a _______ between the intended and the real motor performance
comparator
Cerebrovascular artery infarct
most commonly affects ?
superior cerebellar artery or
posterior inferior cerebellar artery
large cerebellar infarcts can cause cerebellar swelling, leading to block of the ______ ventricle apertures and hydrocephalus
4th
what are 4 other Causes of Cerebellar Disorders?
- head trauma
• multiple sclerosis
• brain tumours
• toxins, such as alcohol
