29 Questions
What is the main function of the intermediate zone of the cerebellum?
Controls the muscles of the distal parts of the limbs (hands and feet)
What is the main function of the vermis region of the cerebellum?
Influences the movements of the long axis of the body (neck, shoulders, thorax, abdomen and hips)
What is the main function of the lateral zone of the cerebellum?
Concerned with planning of sequential movements of the entire body
What is the relationship between a single Purkinje neuron and a climbing fiber in the cerebellar cortex?
A single Purkinje neuron makes synaptic contact with only one climbing fiber
What is the main function of the deep cerebellar nuclei?
They are the major output pathway of the cerebellar cortex
What is the relationship between a single mossy fiber and Purkinje cells in the cerebellar cortex?
A single mossy fiber may stimulate thousands of Purkinje cells through the granule cells
Which of the following is a function of the vestibulocerebellum?
Maintenance of balance and control of head and eye movements
Which of the following is a major afferent pathway to the cerebellum?
Cerebro-olivocerebellar pathway
What is the role of the superior cerebellar peduncles (SCP) in the cerebellar circuitry?
They mediate the decussation of cerebellar afferent fibers
Which of the following is not a major afferent pathway to the cerebellum from the spinal cord?
Rubrospinal tract
What is the role of the vestibular nuclei in the vestibulocerebellum circuitry?
They receive afferent input from the vestibular nerve and project to the vestibular cerebellar cortex
Which of the following is a function of the extrapyramidal motor system?
Maintenance of posture and balance
Which tract originates in the nucleus cuneatus of the medulla oblongata and enters the ipsilateral cerebellum?
Cuneocerebellar tract
Which cerebellar pathway primarily contains efferent fibers from the cerebellar nuclei?
Superior cerebellar peduncle
Which of the following is a common sign or symptom of a lesion in one cerebellar hemisphere?
Dysmetria
Which pathway carries proprioceptive information from the lower limb and trunk to the cerebellum?
Posterior spinocerebellar tract
Which of the following is NOT a common sign or symptom of a cerebellar lesion?
Hemiplegia
Which cerebellar pathway primarily contains afferent fibers from the pontine nuclei?
Middle cerebellar peduncle
What is the primary function of the cerebellum that is impaired in cerebellar diseases?
Coordinating voluntary movements
Which of the following is NOT a common symptom of cerebellar disease?
Aphasia (language disorder)
Which of the following is an example of a rapid alternating movement that may be impaired in cerebellar diseases?
Alternating between pronation and supination of the forearm
What is the primary cause of the wide-based gait seen in individuals with cerebellar diseases?
Impaired balance and coordination
Which part of the cerebellum is primarily responsible for the nystagmus (rhythmic eye oscillations) seen in cerebellar disorders?
Flocculonodular lobes (vestibulocerebellum)
Which of the following is the largest deep nucleus in the cerebellum?
Dentate nucleus
What is the function of the cerebellum in maintaining posture and balance?
All of the above
Which of the following is not one of the three main lobes of the cerebellum?
Temporal lobe
What is the function of the vermis in the cerebellum?
All of the above
What is the purpose of the primary fissure in the cerebellum?
It separates the anterior lobe from the posterior lobe.
What is the role of the cerebro-cerebellar connections in the cerebellum?
They integrate sensory information from the cerebrum to assist in motor planning and execution.
Learn about the structure and functions of the cerebellum, including its two hemispheres, the vermis, gray and white matter composition, and deep nuclei. Understand how the cerebellum is connected to the cerebrum and its role in maintaining posture.
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