The document describes the anatomy and configurations of the cerebellum. It notes that the cerebellum is located in the posterior cranial fossa and communicates with other structures via three cerebellar peduncles. It then describes the longitudinal and transverse divisions that subdivide the cerebellum into lobes and lobules. The document outlines the layers of the cerebellar cortex and types of cells found in each layer. It also details the deep cerebellar nuclei and their subdivisions. Finally, it discusses the connections of the cerebellum, including afferent and efferent pathways and the roles of the vestibulocerebellum, paleocerebellum, and neocerebellum.
14. Classification by Phylogenetic and Ontogenic DevelopmentClassification by Phylogenetic and Ontogenic Development
ArchicerebellumArchicerebellum
PaleocerebllumPaleocerebllum
NeocerebellumNeocerebellum
Classification by Afferent ConnectionClassification by Afferent Connection
VestibulocerebellumVestibulocerebellum
SpinocerebellumSpinocerebellum
PontocerebellumPontocerebellum
Classification by Efferent ConnectionClassification by Efferent Connection
VermisVermis
Paravermal RegionParavermal Region
Cerebellar HemisphereCerebellar Hemisphere
CerebellumCerebellum
ClassificationsClassifications
CerebellumCerebellum
ClassificationsClassifications
19. Efferent ConnectionsEfferent Connections ::
1. Superior Cerebellar Peduncle1. Superior Cerebellar Peduncle
Cerebellothalamic fiberCerebellothalamic fiber
- from 3 deep nuclei to VPLo, VLc, CL- from 3 deep nuclei to VPLo, VLc, CL
Cerebellorubral fiberCerebellorubral fiber
- from nucleus interpositus- from nucleus interpositus
and dentate nucleusand dentate nucleus
ascending portion ofascending portion of
uncinate fasciculus of Russelluncinate fasciculus of Russell
2. Inferior Cerebellar Peduncle2. Inferior Cerebellar Peduncle
Fastigiovestibular fiberFastigiovestibular fiber
descending portion ofdescending portion of
uncinate fasciculus of Russelluncinate fasciculus of Russell
CerebellumCerebellum
ConnectionsConnections
CerebellumCerebellum
ConnectionsConnections
20. MLFMLF
Main Connections of the VestibulocerebellumMain Connections of the VestibulocerebellumMain Connections of the VestibulocerebellumMain Connections of the Vestibulocerebellum
lower motor neuronlower motor neuron
LMNLMN
vestibulospinal tractvestibulospinal tract
FASTIGIALFASTIGIAL
NUCLEUSNUCLEUS
VestibularVestibular
OrganOrgan
FloculonodularFloculonodular
LobeLobe
VermisVermis
ARCHICEREBELLUMARCHICEREBELLUM
VESTIBULAR NUCLEUSVESTIBULAR NUCLEUS
21. Main Connections of the PaleocerebellumMain Connections of the PaleocerebellumMain Connections of the PaleocerebellumMain Connections of the Paleocerebellum
lower motor neuronlower motor neuron
SPINAL CORDSPINAL CORD
rubrospinalrubrospinal
tracttract
NUCLEUSNUCLEUS
INTERPOSITUSINTERPOSITUS
InferiorInferior
OlivryOlivry
NucleusNucleus
ANTERIORANTERIOR
LOBELOBE
PARAVERMALPARAVERMAL
ZONEZONE
PALEOCEREBELLUMPALEOCEREBELLUM
REDRED
NUCLEUSNUCLEUS
spinocerebellarspinocerebellar
tracttract
22. CEREBRALCEREBRAL
CORTEXCORTEX
CEREBRALCEREBRAL
CORTEXCORTEX
DENTATEDENTATE
NUCLEUSNUCLEUS
DENTATEDENTATE
NUCLEUSNUCLEUS
Main Connections of the NeocerebellumMain Connections of the NeocerebellumMain Connections of the NeocerebellumMain Connections of the Neocerebellum
lower motor neuronlower motor neuron
LMNLMN
pyramidalpyramidal
tracttract POSTERIORPOSTERIOR
LOBELOBE
CEREBELLARCEREBELLAR
HEMISPHEREHEMISPHERE
POSTERIORPOSTERIOR
LOBELOBE
CEREBELLARCEREBELLAR
HEMISPHEREHEMISPHERE
THALAMUSTHALAMUSTHALAMUSTHALAMUS
NEOCEREBELLUMNEOCEREBELLUM
PontinePontine
NucleusNucleus
PontinePontine
NucleusNucleus
23. upper motor neuronupper motor neuron
UMNUMN
upper motor neuronupper motor neuron
UMNUMN
BASALBASAL
GANGLIAGANGLIA
BASALBASAL
GANGLIAGANGLIA
Pyramidal Tract and Associated CircuitsPyramidal Tract and Associated CircuitsPyramidal Tract and Associated CircuitsPyramidal Tract and Associated Circuits
lower motor neuronlower motor neuron
UMNUMN
lower motor neuronlower motor neuron
UMNUMN
pyramidal tractpyramidal tract
CerebellumCerebellumCerebellumCerebellum
24. Reticular
Formation
Reticular
Formation
CEREBELLUMCEREBELLUM
Cerebellum and Automatic Motor ControlCerebellum and Automatic Motor ControlCerebellum and Automatic Motor ControlCerebellum and Automatic Motor Control
Lower Motor Neuron (LMN)Lower Motor Neuron (LMN)Lower Motor Neuron (LMN)Lower Motor Neuron (LMN)
Motor CortexMotor Cortex
Red NucleusRed Nucleus
Vestibular
Nucleus
Vestibular
Nucleus
ProprioceptorsProprioceptorsProprioceptorsProprioceptors
25. Corticonuclear ConnectionsCorticonuclear Connections
A zone ---------- fastigial nucleusA zone ---------- fastigial nucleus
medial vestibular nucleusmedial vestibular nucleus
B zone ---------- lateral vestibular nucleusB zone ---------- lateral vestibular nucleus
CC11, C, C33 zone --- emboliform nucleuszone --- emboliform nucleus
CC22 ---------------- globose nucleus---------------- globose nucleus
DD11 ---------------- parvocellular portion of dentate nucleus---------------- parvocellular portion of dentate nucleus
DD22 ---------------- magnocellular portion of dentate nucleus---------------- magnocellular portion of dentate nucleus
CerebellumCerebellum
ConnectionsConnections
CerebellumCerebellum
ConnectionsConnections
29. CerebellumCerebellum
FunctionFunction
CerebellumCerebellum
FunctionFunction
ï¶ï¶ Maintenance of EquilibriumMaintenance of Equilibrium
- balance, posture, eye movement- balance, posture, eye movement
ï¶ï¶ Coordination of half-automatic movement ofCoordination of half-automatic movement of
walking and posture maintenacewalking and posture maintenace
- posture, gait- posture, gait
ï¶ï¶ Adjustment of Muscle ToneAdjustment of Muscle Tone
ï¶ï¶ Motor Leaning â Motor SkillsMotor Leaning â Motor Skills
ï¶ï¶ Cognitive FunctionCognitive Function
34. CerebellarCerebellar
AtaxiaAtaxia
Ataxic gait andAtaxic gait and
position:position:
Left cerebellar tumorLeft cerebellar tumor
a. Sways to the right ina. Sways to the right in
standing positionstanding position
b. Steady on theb. Steady on the
right legright leg
c. Unsteady on thec. Unsteady on the
left legleft leg
d. ataxic gaitd. ataxic gait
a b c
d
35. Cerebellar tumors onCerebellar tumors on vermisvermis
- Truncal Ataxia- Truncal Ataxia
- Frequent Falling- Frequent Falling
The child in this picture:The child in this picture:
- would not try to stand- would not try to stand
unsupportedunsupported
- would not let go of the bed rail- would not let go of the bed rail
if she was stood on the floor.if she was stood on the floor.
CerebellarCerebellar
MedulloblastomaMedulloblastoma