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;
28 Cards in this Set
- Front
- Back
|
Name the function of the cerebellum. |
Co-ordination Precision + timing of movements |
|
|
What does cerebellum mean? |
Little brain |
|
|
From which part of the early brain does cerebellum arise? e.g forebrain from prosencephalon |
Metencephalon |
|
|
What separates the occipital and temporal lobes from the cerebellum? |
Tentorium cerebelli |
|
|
What connects the 2 hemispheres of the cerebellum? |
The vermis |
|
|
Where is grey matter found in the cerebellum? |
Cerebellar cortex |
|
|
Where is white matter found in the cerebellum? |
Underneath the cerebellar cortex |
|
|
Name the 4 nuclei found within the white matter. |
- Dentate - Emboliform - Globose - Fastigi nuclei |
|
|
In what ways can the cerebellum be divided? |
Anatomical lobes Zones Functional divisions |
|
|
Name the 3 lobes of the cerebellum. |
Anterior Posterior Flocculonodular |
|
|
Name the 2 fissures that divide these lobes. |
Primary Posterolateral |
|
|
What lobes does the primary fissure separate? |
Anterior from posterior |
|
|
What does the postero-lateral fissure separate? |
Corpus cerebelli from flocculonodular |
|
|
How many zones are there? |
3 |
|
|
The vermis lies in the midline of the cerebellum. What lies either side of this?
|
Intermediate zones |
|
|
What lies lateral to the intermediate zones? |
Lateral hemispheres |
|
|
Name the 3 functional divisions of the cerebellum. |
Cerebrocerebellum Spinocerebellum Vestibulocerebellum |
|
|
What makes up the cerebrocerebellum? |
Lateral hemispheres |
|
|
Describe the function of the cerebrocerebellum. |
Involved in planning movements & motor learning. Receives input from the cerebral cortex + pontine nuclei & sends outputs to the thalamus & red nucleus. Also regulates co-ordination of muscles + is involved in visually guided movements |
|
|
What makes up the spinocerebellum? |
Vermis + intermediate zones |
|
|
What is it involved in? |
Regulating body movements. Receives proprioceptive information |
|
|
What is the vestibulocerebellum made of? |
Flocculonodular lobe |
|
|
What is it involved in? |
Controlling balance & ocular reflexes e.g. allows fixation on target Receives input from vestibular system + sends output back to vestibular nuclei |
|
|
What is the blood supply to the cerebellum? |
Receives blood from 3 paired arteries: - Superior cerebellar - Anterior inferior cerebellar - Posterior inferior cerebellar SCA + AICA are branches of the basilar which wraps around pons before reaching the cerebellum. PICA is a branch of vertebral |
|
|
What is the venous drainage of the cerebellum? |
Superior and inferior cerebellar veins |
|
|
Where do they drain? |
Superior petrosal, transverse and straight dural venous sinuses. |
|
|
What does damage to the vestibulocerebellum manifest as? |
Loss of balance Abnormal gait with wide stance |
|
|
What does damage to cerebrocerebellum & spinocerebellum present with? |
Problems carrying out skilled + planned movements + in motor learning e.g. - ataxia - dysarthria - Hypotonia - coarse nystagmus |
