Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
18 Cards in this Set
- Front
- Back
|
3 cerebellar lobes |
Ant Post - separated by primary fissure Flocculonodular - seen ventral |
|
|
3 anatomical divisions |
Vermal - head and trunk Paravermal - prox limbs Lateral - distal limbs |
|
|
3 functional divisions |
Vest - flocculonodular lobe Spino - vermal and paravermal zones Cerebro - lateral zone |
|
|
3 peduncles |
Sup - output Mid - input from cortex (cerebrocerebellum) Inf - climbing fibers from inf olive, spino/vestibulocerebellar pathways |
|
|
What does a cerebellar lesion always cause? |
-ipsilateral motor control deficits |
|
|
4 deep nuclei |
Fastigial - vermal zone Interposed (globose and emboliform) - between vermal and paravermal zones Dentate - lateral zone |
|
|
Mossy fibers |
-carry info from all over CNS -synapse with granule cells |
|
|
Granule cells |
-axons are parallel fibers -synapse with purkinje cells |
|
|
Purkinje cells |
-only neuron that can send info out of cerebellum -is inhibitory |
|
|
Climbing fibers |
-carry info from inf olive to excite purkinje fibers |
|
|
3 layers of cerebellum (superficial ->deep) |
-molecular -purkinje -granule |
|
|
Fxn of vestibulocerebellum |
-gaze stabilization -balance |
|
|
Fxn of spinocerebellum (vermal) |
-MM tone -online corrections |
|
|
Fxn of spinocerebellum (paravermal) |
-online corrections |
|
|
Fxn of cerebrocerebellum |
-motor planning, timing, and coordination |
|
|
Lesions of flocculonodular lobe |
-balance problems -truncal ataxia -nystagmus |
|
|
Lesions of spinocerebellar circuitry |
-hypotonia -gait ataxia |
|
|
Lesions of cerebrocerebellar circuitry |
-problems with motor planning and fine movements -limb ataxia -dysarthria |
