Basal ganglia, cerebellum, control of movement Flashcards Preview

3 Neuroanatomy > Basal ganglia, cerebellum, control of movement > Flashcards

Flashcards in Basal ganglia, cerebellum, control of movement Deck (19):
1

Name the extension of the dura mater that separates the cerebellum from the occipital lobes.

Tentorium cerebelli

2

Name the 3 stalks that attach the cerebellum to the brainstem:

Peduncles

3

What are the 3 layers of the cerebellar cortex?

1. Molecular layer
2. Purkinje cell layer
3. Granule cell layer

4

Afferent inputs to the cerebellum are from the:
1. Spinal cord (______and _______ receptors)
2. ____ cortex
3._____ apparatus

1. priorioceptors and pressure receptors
2. cerebral cortex
3. vestibular apparatus

5

Efferent outputs of the Cerebellum are via the ______ cells. These synapse in the ____ _____ nuclei, where they coordinate ____ ____ function.

Efferent outputs of the Cerebellum are via the Purkinje cells. These synapse in the deep cerebellar nuclei, where they coordinate motor tract function.

6

The axons of deep cerebellar nuclei synapse in the ______, which sends fibres to the motor cortex.

The axons of deep cerebellar nuclei synapse in the thalamus, which sends fibres to the motor cortex.

7

Lesions to a cerebellar hemisphere result in symptoms to the _______ side of the body

Lesions to a cerebellar hemisphere result in symptoms to the ipsilateral side of the body

8

Describe the signs and symptoms of bilateral cerebellar dysfunction:

DANISH:
Disdiadokinesia
Ataxia
Nystagmus
Intention tremor
Slurred speach
Hypotonicity

9

Midline cerebellum lesions result in loss of ____ control

Midline cerebellum lesions result in loss of postural control

10

List the components of the Basal Ganglia:

-caudate nucleus
-putamen
-globus pallidus
-subthalamic nucleus
-substantia nigra

11

List 3 functions of the Basal Ganglia:

-facilitate purposeful movement
-inhibit unwanted movement
-posture and muscle tone

12

What is the location of substantia nigra?

Midbrain

13

Loss of ____ _____ is characteristic of Parkinson's disease

Loss of substantia nigra is characteristic of Parkinson's disease

14

The Basal Ganglia enhance desired movement via the direct/indirect pathway

The Basal Ganglia enhance desired movement via the direct pathway

15

_____ pathway inhibits the outflow of the thalamus, suppressing unwanted movement

Indirect pathway inhibits the outflow of the thalamus, suppressing unwanted movement

16

Basal ganglion lesions affect the ______ side of the body.

Basal ganglion lesions affect the contralateral side of the body.

17

What are the signs of basal ganglia lesions?

-Altered muscle tone
-Dyskinesias:
*tremor
*chorea (rapid asymmetrical movements)
*muscle jerks

18

List 3 signs/symptoms of Parkinson's DIsease:

-akinesia (loss of voluntary movement)
-rigidity
-resting tremor

19

Huntington's disease is progressive degeneration of the ____ _____ and ____ ____

Huntington's disease is progressive degeneration of the basal ganglia and cerebral cortex