neuroanatomy - Cerebellum Flashcards
what is the function of the cerebellum?
coordination, precision and timing of movements as well as motor learning
the anterior portion of the neural tube forms three parts?
forebrain, midbrain and hindbrain
the forebrain is from the?
prosencephalon
the midbrain is from the?
mesencephalon
the hindbrain is from the?
rhombencephalon
the hindbrain subsequently divides into the?
metencephalon (superior) and the myelencephalon (inferior0
the location of the cerebellum is? (3)
it is located at the back of the brain, immediately inferior to the occipital and temporal lobes and within the posterior cranial fossa
the tentorium cerebella is a?
tough layer of dura mater
what separates the pons and the cerebellum?
the 4th ventricle
what is the at the same level and posterior to the pons?
cerebellum
what connects the two hemispheres of the cerebellum?
vermis
the grey matter part of the cerebellum is called the?
cerebellar cortex
what is located underneath the cerebellar cortex?
white matter
what are the four cerebellar nuclei?
the dentate, emboliform, globose and fastigi nuclei
there are three anatomical lobes in the cerebellum (3)
anterior, posterior and flocculonodular
what are the two fissures that divide the three lobes of the cerebellum?
primary fissure and posterolateral fissure
there are three cerebellar zones
vermis
intermediate zone
lateral zone
where is the vermis located?
in the midline of the cerebellum
where is the intermediate zone located?
on either side of the vermis
where is the lateral zone located?
lateral to the intermediate
there is no difference in ——- structure between the lateral hemispheres and the intermediate zones
gross
what are the three functional areas of the cerebellum?
cerebrocerebellum
spinocerebellum
vestibulocerebellum
what is the largest division of the cerebellum?
cerebrocerebellum
what is the cerebrocerebellum formed by?
the lateral hemispheres
what is the function of the cerebrocerebellum? (5)
planning movements and motor learning. regulating coordination of muscle activation and is important in visually guided movements.
where does the cerebrocerebellum receive input from?
cerebral cortex and pontine nuclei
where the cerebrocerebellum sent output to?
thalamus and red nucleus
what does the spinocerebellum comprise of?
vermis and intermediate zone of the cerebellar hemispheres
what is the function of the spinocerebellum?
regulating body movements by allowing for error correction and also receiving proprioceptive information
what is the functional equivalent to the flocculonodular lobe?
vestibulocerebellum
what is the function of the vestibulocerebellum?
controlling balance and ocular reflexes, mainly fixation on a target
where does the veesstibulocerebellum receive input from?
vestibular system
where does the vestibulocerebellum send output back to?
the vestibular nuclei
what are the three paired arteries that supply the cerebellum?
superior cerebellar artery
anterior inferior cerebellar artery
posterior inferior cerebellar artery
the SCA and AICA are branches of the?
basilar artery
the SCA and AICA wrap around the anterior aspect of the ——- before reaching the cerebellum
pons
the PICA is a branch of the
vertebral artery
the venous drainage of the cerebellum is by the
superior and inferior cerebellar veins
the superior and inferior cerebellar veins drain into the?
superior petrosal, transverse and straight dural venous sinuses
