Cerebellum Flashcards
بسم الله الرحمن الرحيم
احرص علي ماينفعك !
______________
Cerebellum is developed from ?
Rhombencephalon
Hind Brain
larges part
The cavity of cerebellum between it and pons and medulla is ?
4th ventricle
Site of Cerebellum
In the posterior Cranial fossa with tentorium cerebelli roofing it separating it from Cerebral hemishperes
Lies posterior to pons and medualla with 4th ventrivle
intervening
Notches of Cerebellum mention
Anteiror for pons and medulla
posterior for falx cerebelli
Strucutre and surface of cerebellum
IT is consited of Two Cerebellar hemishperes separated by VERMIS
has Deep horizontal Fissure separating Superior from inferior
The superior surface have Fissura PRIMA separating anterior from posterior
The inferior surface has Posteriolateral fissure separating Folucclonodular lobe from the posterio lobe
Grey matter of cerebellum describe !
Cerebellar cortex on the surface folded into Folia
Cerebellar Nuceli : emedded in the substance of White matter As embiliform dentate globose and Fastigial Nuclei
Divisons of Cerebellum
Anatomic-functional
Antmoic
anterior and posterioR lobes separated by fissura prima
Posterio and folucclonodular separated by Posterolateral fissure
______________________
Functional : -
Archicerebellum
Paleo
Neo Cerebellum
Funcctions of Functional divisions of cerebellum ?
1- Archicerebellum = folcculonodular lobe connected to the vestibule for balance and eqiuilibrium
_____________________
2-Palocerebellum =
Vermis +paravermal parts
Vermis for trunks Vis Fastigial Nucleus
Paravermal for Distal limb muscles via Embiliform and Globose .
Spinal connection Cotricospinal tract
Muscle tone -posture -coordinate skilled Voluntary movments
______________________
3-Neocerebellum most lateral part of cerebellar hemishpers having cortico- –ponto- cerebellar connections for planning and programming of movments with motor cortex for contralateral cerebral cortex via DENTATE NUCLEUS
blood suppply of the Cerebellum
aRterial :
The Basilar artery gives:
Superior cerebellar
Ant inferior cerebellar
The vertebral artery gives:
Post inferior Cerebellar art
Afferetns of ICP ?
and efferetns
A2S(VO2R )
عصفور طاير للمخيخ
_________________
Dorsal extranl arcuate fibers from the Acessory cunate nucleus cunocerebellar
Ventral external arucate form arcuate Nucleus
Posterio spinocerebellar from ipsilateral clarke nucleus proprioceptive mossy fibers
Vestibulo-Cerebellar from Vestibular nuclei and vestibular ganglion
___________________
Olivo-cerebellar from inferior olivary nucleus
Para-olivo-Cerebellar form The Dorsal and medial accessory olivary nuclei
Reticlo-cerebellar from Reticular Formation
_________________
A2S(VO2R)
العصفور يرجع يرد علي اخر تلاته هم مين ؟
Vestiubluar nucleus via cerebello-vestibular thorugh foluccolonodular
Inf Olivary nucleus via cerebello olivary
Reticular formation via Cerebello Reticular
___________________
Middle cerebellar peduncle /?
The largest one
Connects Cerebellum to pons
has Cortico Ponto Cerebellatr tract
SCP describe
Mid brain connection
_______________-
Afferents st
ANtreiro spinocerebellar
tEcto cerebellat from superior colliculis
_________________
efferents FCD
Fastigio-reticular from fatigial nucelus to reticualr formation
Cerbello-rubral : from emoliform and globose nuclei to red nucelus
Dentate-thalamic to VLN OF THALAMUS
Dentate-rubro-thalamic fibers TO VLN OF THALAMUS
:
سلام علي المرسلين والحمدلله رب العالمين
