Flashcards in Basal ganglia, cerebellum, control of movement Deck (19)
Name the extension of the dura mater that separates the cerebellum from the occipital lobes.
Name the 3 stalks that attach the cerebellum to the brainstem:
What are the 3 layers of the cerebellar cortex?
1. Molecular layer
2. Purkinje cell layer
3. Granule cell layer
Afferent inputs to the cerebellum are from the:
1. Spinal cord (______and _______ receptors)
2. ____ cortex
1. priorioceptors and pressure receptors
2. cerebral cortex
3. vestibular apparatus
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.
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.
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
Describe the signs and symptoms of bilateral cerebellar dysfunction:
Midline cerebellum lesions result in loss of ____ control
Midline cerebellum lesions result in loss of postural control
List the components of the Basal Ganglia:
List 3 functions of the Basal Ganglia:
-facilitate purposeful movement
-inhibit unwanted movement
-posture and muscle tone
What is the location of substantia nigra?
Loss of ____ _____ is characteristic of Parkinson's disease
Loss of substantia nigra is characteristic of Parkinson's disease
The Basal Ganglia enhance desired movement via the direct/indirect pathway
The Basal Ganglia enhance desired movement via the direct pathway
_____ pathway inhibits the outflow of the thalamus, suppressing unwanted movement
Indirect pathway inhibits the outflow of the thalamus, suppressing unwanted movement
Basal ganglion lesions affect the ______ side of the body.
Basal ganglion lesions affect the contralateral side of the body.
What are the signs of basal ganglia lesions?
-Altered muscle tone
*chorea (rapid asymmetrical movements)
List 3 signs/symptoms of Parkinson's DIsease:
-akinesia (loss of voluntary movement)