Afferent 1
What is the function of the afferent tracts arising from the spinal cord?
Ipsilateral proprioceptive information
What is the function of the afferent tract arising from the vestibular nerve?
Proprioception
Choose the correct options:
Afferent tracks are (Inhibitory/Excitatory) and travel (Away/To) the cerebellum
Afferent tracts are excitatory and travel to the cerebellum
Name the function and tract of the Dentate Nucleus
Contralateral motor coordination - Rubrospinal tract
Name the function and tract of the Emboliform Nucleus
Tone of contralateral skeletal muscles - Rubrospinal tract
What are the 3 functions of the afferent tracts arising from the cerebral cortex
Motor planning, motor learning, cognition
Name the tract arising from the vestibular nerve
Vestibulocerebellar tract
Demonstrate Cogwheeling with another member of your team.
Hopefully you did it correctly :D
Name the functions and tract of the Fastigial Nucleus
Coordination of balance and saccadic ocular movements; stretch reflex and motor movements - Cerebellovestibular Tract
Name the function and tract of the Globose nucleus.
Tone of contralateral skeletal muscles - rubrospinal tract
What is the path of the tract arising from the vestibular nerve?
Vestibular Nerve => Vestibular nuclei => (mossy fibers) => (ipsilateral) flocculonodular lobe via the (inferior) cerebellar peduncle
Which afferent tract(s) has/have climbing fibers?
Cortico-olivocerebellar tract
What arteries supply the cerebellum?
Basilar artery branches: Superior cerebellar artery (SCA); Anterior inferior cerebellar artery (AICA)
Vertebral artery branch: Posterior inferior cerebellar artery (PICA)
What does the superior cerebellar peduncle connect?
Midbrain and cerebellum. (It's efferent)
What kind of cells are the efferent pathways of the inferior cerebellar peduncles composed of? Also common in the cerebellar cortex.
Purkinje cells (and their axons in the inferior cerebellar peduncles).
Name the three tracts arising from the cerebral cortex
Corticopontocerebellar; Cortico-olivocerebellar; Corticoreticulocerebellar
Name 2 of the tracts arising from the spinal cord.
Spinocerebellar; Dorsal or Ventral Spinocerebellar; Cuneocerebellar; Rostral Spinocerebellar
Why are cerebellar symptoms on the same side as a tumor of the cerebellum?
Afferent and efferent cerebellar tracts travel through the peduncles to and from the ipsilateral cerebellar cortex.
What is the path of the tract beginning with the interposed nuclei (emboliform and globose)?
Globose and emboliform nuclei → superior cerebellar peduncle → red nucleus → rubrospinal tract
What is the path of the tract that begins at the Dentate nucleus?
Dentate nucleus → superior cerebellar peduncle → thalamic nuclei → internal capsule → corona radiata → primary motor cortex
What is the path of the tracts arising from the spinal cord?
Golgi tendon organs and muscle spindles → posterior horn of the spinal cord → (mossy fibers) → cerebellar hemisphere via the (inferior and superior) cerebellar peduncles
What is the path of at least one of the tracts arising from the cerebral cortex?
PONTO - Cerebral cortex → corona radiata → internal capsule → pontine nuclei → mossy fibers → cerebellar hemisphere via middle cerebellar peduncle
OLIVO - Cerebral cortex → corona radiata → internal capsule → inferior olivary nuclei → climbing fibers → cerebellar hemisphere via inferior cerebellar peduncle
RETICULO - Cerebral cortex → corona radiata → reticular formation in pons and medulla → mossy fibers → cerebellar hemisphere via the inferior cerebellar peduncle and middle cerebellar peduncle
Without looking at the Pearls Case, what is the first and last name of the patient?
OR
Say dysdiadochokinesia 5 times fast and explain what it means
Billy Varma
inability to perform rapid alternating muscle movements.
What is the path of the tract arising from the fastigial nucleus and ending at the vestibulospinal tract?
Fastigial nucleus → inferior cerebellar peduncle → bilateral vestibular nuclei → vestibulospinal tract
What is the path of the tract beginning at the fastigial nucleus and ending at the motor neurons of the spinal cord?
Fastigial nucleus → inferior cerebellar peduncle → bilateral reticular formation → reticulospinal tract → motor neurons from spinal cord