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34 Cards in this Set
- Front
- Back
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What are the afferents associated with the cerebrocerebellar tract? |
1. From cortex via pontine nuclei 2. Tectocerebellar tract 3. Olivocerebellar tract 4. Middle cerebellar peduncle (all three) |
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What are the efferents associated with the cerebrocerebellar tract? |
1. Cerebellorubral 2. Cerebellothalamic 3. All via the superior cerebellar peduncle |
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What is the function of the cerebrocerebellar tract? |
1. Planning of motor activity patterns |
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What deep cerebellar nucleus is associated with the cerebrocerebellar tract? |
1. Dentate |
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What are the afferents associated with the spinocerebellar tract? |
1. Rubrospinal 2. Olivocerebellar 3. Reticulocerebellar 4. Trigeminocerebellar 5. Tectocerebellar 6. Spinal sensory
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What peduncles are associated with the spinocerebellar tract? |
1. Inferior and superior |
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What are the efferents associated with the spinocerebellar tract? |
1. Cerebellorubral 2. Cerebellothalamic 3. Cerebelloreticular 4. Cerebellovestibular |
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What deep cerebellar nuclei are associated with the spinocerebellar tract? |
1. Fastigial 2. Globose 3. Emboliform |
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What is the function of the spinocerebellar tract? |
1. Execution of motor activity patterns |
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What makes up the vestibulocerebellar connections? |
1. Flocculonodular lobe
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What are the afferents associated with the vestibulocerebellar tract? Via what peduncle? |
1. Olivocerebellar 2. Vestibulocerebellar 3. Vestibular ganglion 4. Via Inferior cerebellar peduncle |
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What are the efferents associated with the vestibulocerebellar tract? |
1. Cerebellovestibular 2. Cerebelloreticular |
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What deep cerebellar nucleus is associated with the vestibulocerebellar tract? |
1. Fastigial |
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What is the function of the vestibulocerebellar tract? |
1. Balance 2. Coordination of vestibular and motor activity |
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What is the function of the fastigial nucleus? |
1. Control trunk movements |
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What is the function of the interposed nuclei? |
1. Coordinate limb movement |
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What will a lesion to the vestibulocrebellar tract cause? |
1. Truncal ataxia 2. Nystagmus |
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What will a lesion to the spinocerebellar tract lead to? |
1. Ataxic gait |
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What will a lesion to the cerebrocerebellar connection lead to? |
1. Intention tremors 2. Dysmetria 3. Dysdiadochokinesia 4. Falling towards the ipsilateral side of lesion |
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What are the sources of climbing fibers? |
1. Inferior olive body 2. Olivocerebellar tract |
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What is the one common component to all three cerebellar circuits? |
1. Inferior olive body |
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What is the function of the inferior olive body? |
1. Cerebellar learning and refinement |
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Are the ssx of a cerebellar lesion ipsilateral or contralateral? |
1. Ipsilateral |
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What are the ssx of an acute cerebellar lesion? |
1. Sudden, severe ssx 2. Complete recovery |
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What are the ssx of a chronic cerebellar lesion? |
1. Less severe--- other parts of CNS can compensate 2. Usually dysmetria+dysrhythmia |
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What leads to cerebellar ataxia? |
1. Lesions of the cerebellar circuitry in the brain stem |
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What are the general ssx of a cerebellar lesion? |
1. Hypotonia 2. Postural change and alteration of gait 3. Disturbed reflexes 4. Dysdiadochokinesia 5. Dysmetria 6. Dysrhythmia 7. Dysarthria 8. Ataxia 9. Nystagmus |
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How do you test for hypotonia? |
1. Shake limb on affected side 2. Excessive movements at the terminal joint are revealed |
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How do you test for postural change and alteration of gait? |
1. Standing: wide gait 2. Walking: lurching or staggering on affected side |
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How do you test for disturbed reflexes? |
1. Pedular knee jerk: tap on patellar tendon, series of flexions and extensions of the knee and the leg moves forwards and backwards repeatedly |
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How do you test for dysdiadochokinesia? |
1. Inability to perform supination and pronation rapidly |
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How do you test for ataxia? |
1. Finger to nose test 2. Heel to shin test |
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What are the different types of nystagmus? |
1. Pendular-- eyes oscillate at same rate to right and left 2. Jerky-- faster in 1 direction more than the other 3. Rotatory-- in more than one plane |
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How do you test for nystagmus? |
1. Follow the finger, buddy |
