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Neuroanatomy-Block I > Cerebellum > Flashcards

Flashcards in Cerebellum Deck (24)
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1

What are the 3 terms to remember about the Cerebellum?

1. Computer
2. Mid-Course Corrections
3. Dysmetria

2

Where is the cerebellum located?

Posterior cranial fossa

3

What are the contents of the posterior cranial fossa?

Brain stem, intracranial portions of CNs 3-12, cerebral aqueduct, 4th ventricle, cerebellum

4

What do you call the inability to carry out coordinated limb movements?

Dysmetria

5

What do you call the inability to speak clearly?

Dysarthria

6

What is the inability to carry out rapid alternating hand movements?

Dysdiadochokinesis

7

What is the inability to walk with coordination called?

Ataxia

8

What is the inability to move the eyes with precision called?

Ocular Dysmetria

9

What is the involuntary and alternating saccadic and pursuit eye movements called?

Nystagmus

10

Name some signs of a cerebellar disorder

Dysmetria
Dysarthria
Dysdiadochokinesis
Ataxia
Ocular dysmetria
Intention tremor
Nystagmus

11

Dysmetria of the extremities is a dysfunction of the medial or lateral Cerebellum? (finger/nose, heel/shin)

Lateral Cerebellum

12

Three things that should not be affected by cerebellar Dysfunction:

1. Reflexes
2.Muscle Tone
3. Strength
If you see changes in these, this is likely NOT a cerebellar issue

13

What is in charge of suppressing unwanted Cerebral Cortex activity?

Basal Ganglia

14

What do you call the inability to initiate motor activity?

Akinesia

15

Chorea, myoclonus, athetosis, and ballismas are the inability to suppress what?

Unwanted motor activity

16

5 Cerebral components of the Basal Ganglia

1. Caudate nucleus
2. Ptamen nucleus
3. Globus pallidus (lateral or externa)
4. Globus pallidus (medial or interna)
5. Subthalamic nucleus

17

When primary degeneration occurs in the putamen nucleus (Huntington's Disease) - what are the motor signs?

Chorea
Athetosis
Loss of weight

18

Does an Upper Motor Neuron lesion affect contralateral or ipsilateral motor signs?

Contralateral

19

Does a lesion in the Basal ganglia affect contralateral or ipsilateral motor signs?

Contralateral

20

Does a lesion in the Lateral cerebellum affect contralateral or ipsilateral motor signs?

Ipsilateral

21

What are the cardinal signs of a lower motor neuron pathology?

weakness, marked muscle atrophy, hypotonia, hypeoreflexia, fasciculations

22

What are the cardinal signs of a upper motor neuron pathology?

weakness, disuse muscle atrophy, hypertonia, hyperrreflexia, spastic rigidity, exaggerated superficial reflexes (babinski)

23

Basal ganglion pathology

weakness, leadpipe rigidity, hyperkinesia, hypokinesia, resting tremor

24

What are the cardinal signs of cerebellar

dysmetria, ataxia, nystagmus