Cerebellum Flashcards Preview

Neuroanatomy-Block I > Cerebellum > Flashcards

Flashcards in Cerebellum Deck (24)
Loading flashcards...
1
Q

What are the 3 terms to remember about the Cerebellum?

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

Where is the cerebellum located?

A

Posterior cranial fossa

3
Q

What are the contents of the posterior cranial fossa?

A

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

4
Q

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

A

Dysmetria

5
Q

What do you call the inability to speak clearly?

A

Dysarthria

6
Q

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

A

Dysdiadochokinesis

7
Q

What is the inability to walk with coordination called?

A

Ataxia

8
Q

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

A

Ocular Dysmetria

9
Q

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

A

Nystagmus

10
Q

Name some signs of a cerebellar disorder

A
Dysmetria
Dysarthria
Dysdiadochokinesis
Ataxia
Ocular dysmetria
Intention tremor
Nystagmus
11
Q

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

A

Lateral Cerebellum

12
Q

Three things that should not be affected by cerebellar Dysfunction:

A
  1. Reflexes
    2.Muscle Tone
  2. Strength
    If you see changes in these, this is likely NOT a cerebellar issue
13
Q

What is in charge of suppressing unwanted Cerebral Cortex activity?

A

Basal Ganglia

14
Q

What do you call the inability to initiate motor activity?

A

Akinesia

15
Q

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

A

Unwanted motor activity

16
Q

5 Cerebral components of the Basal Ganglia

A
  1. Caudate nucleus
  2. Ptamen nucleus
  3. Globus pallidus (lateral or externa)
  4. Globus pallidus (medial or interna)
  5. Subthalamic nucleus
17
Q

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

A

Chorea
Athetosis
Loss of weight

18
Q

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

A

Contralateral

19
Q

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

A

Contralateral

20
Q

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

A

Ipsilateral

21
Q

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

A

weakness, marked muscle atrophy, hypotonia, hypeoreflexia, fasciculations

22
Q

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

A

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

23
Q

Basal ganglion pathology

A

weakness, leadpipe rigidity, hyperkinesia, hypokinesia, resting tremor

24
Q

What are the cardinal signs of cerebellar

A

dysmetria, ataxia, nystagmus