The cerebellum is located in the posterior cranial fossa:
The Purkinje cells are the only efferent neurons of cerebellar cortex
The cerebellar blood supply is through branches of basilar and vertebral arteries:
The cerebellum is a derivate of the rhombencephalon.
The mossy fibers end on the purkinje cells.
The cerebellum is a voluntary somatomotor center.
Cerebellar disorders are associated with increased muscular tone.
The cerebellar vermis contains archi-, paleo- and neocerebellar structures.
The golgi cells are excitatory cell in the cerebellar cortex.
The cerebellum contains the greatest number of neurons in the brain.
One of the following is NOT TRUE for the dentate nucleus
It is in the dorsal part of the pons
The dentorubral tract starts from it.
The dentothalamic tract starts from it.
It receives afferents from Purkinje cells.
It receives afferents from olivocerebellar tract
The inferior cerebellar peduncle contains all of the following afferent connections EXCEPT the
Cuneocerebellar tract
Ventral spinocerebellar tract
Dorsal spinocerebellar tract
Olivocerebellar tract
Trigeminocerebellar fibers
All of the following statements concerning the superior cerebellar peduncle are correct EXCEPT it
Connects the cerebellum to the midbrain
Is primarily an efferent bundle of fibers
Represents the major output from the cerebellum
Contains dentatothalamic fibers
Contains the juxtarestiform body
All of the following statements concerning the neocerebellar pathway are correct EXCEPT
The neocerebellar pathway influences the motor cortex via the ventral anterior thalamic nucleus
The dentatothalamic tract decussates in the midbrain
The corticopontocerebellar tract decussates in the base of the pons
The neocerebellum expresses itself via the corticospinal tract
The dentate nucleus is reciprocally connected with the inferior olivary nucleus
All of the following statements concerning the cerebellum are correct EXCEPT it
Contains four pairs of nuclei within its medullary body
Contains two pairs of cerebellar peduncles
Consists of a midline vermis and two lateral hemispheres
Is located infratentorially within the posterior fossa
Has a three-layered cortex
Projects to the red nucleus
Projects to the vesticular nuclei
Projects to the lateral ventral nucleus of the thalamus
Receives input from the superior olivary nucleus
Receives the olivocerebellar tract via the inferior cerebellar peduncle
Is derived from the alar plate
Develops from the rhombic lips
Is part of the metencephalon
Is part of the rhombencephalon
Is part of the brainstem
All of the following statements concerning the dentate nucleus are correct EXCEPT it
Receives input from climbing the mossy fibers
Receives inhibitory input from Purkinje cells
Gives rise to the superior cerebellar peduncle
Gives rise to the fascia dentata (dentate gyrus)
Projects to the ventral lateral nucleus of the thalamus
One of the following is NOT a part of neocerebellum:
Uvula
Lobulus simplex
Lobulus semilunaris superior
Lobulus biventer
Tonsil
The cerebellum:
Through the inferior cerebellar peduncle receives a large number of fibres which are associated with proprioception
Has connections with the frontal lobe through the superior cerebellar peduncle and thalamus
Has no grey matter other than that of the cerebellar cortex
Has a uniform structure throughout its cortex
Receives fibres from the olivary nucleus mainly of the same side.
The inferior cerebellar peduncles
Contain fibres most of which end in the cerebellar cortex
Form part of the lateral boundaries of the lower part of the fourth ventricle.
Contain fibres from the opposite olivary nucleus
Are medial to the glossopharyngeal nerves
Contain fibres from the vestibular nuclei of the same side.
The superior cerebellar peduncles
Contain the fibres of the posterior spinocerebellar tract
Contain fibres whose cell bodies are usually in the cerebellar cortex
Contain fibres which go to the red nucleus
Contain fibres which decussate in the midbrain
Contain fibres which go to the thalamus.
The following are efferents of the cerebellum:
Tractus cerebelloolivaris
Fibrae cerebelloreticularis
Tractus cerebellocochlearis
Tractus cerebellovestibularis
Tractus cerebellolenticularis
Cerebellar cortex has direct connections with
Vestibular nuclei
Forebrain cortex
Substantia nigra
Nucleus ambiguus
Red Nucleus
The pathway ensuring feedback in the cortico-cerebellar circuit are:
Tractus corticopontinus
Tractus pontocerebellaris
Fibae arcuatae
Tractus dentatoolivaris
Fibrae thalamocorticales
The afferent pathways to the cerebellum convey the following sensation:
General conscious sensation
Specific conscious sensation
General unconscious sensation
Specific unconscious sensation
A and D
Afferent pathways to cerebellum pass:
Only through the middle cerebellar peduncles
Only through the middle and inferior cerebellar peduncles
Through the superior cerebellar peduncles
Only through the inferior and superior cerebellar peduncles) .
Through the three peduncles
The neocerebellum includes
Lingula
Efferent pathways of the cerebellum reach
Directly the somatomotor cell of the spinal cord
Only nuclei of the extrapyramid system
Nuclei of the extrapyramid system and diencephalon
Thalamus
Nucleus vestibularis lateralis
Purkinje cells:
Are large pyramid cells
Are efferent cells of the cerebellar cortex
End by inhibitory synapses on the cerebellar nuclei
Their dendrites enter the molecular layer of the cerebellar cortex
Are GABA mediated
