Anatomy of Basal Ganglia and Cerebellum, and Control of Movement Flashcards
Which is the only type of sensory information that can access the cortex without passing by the thalamus first?
Olfactory.
What are the lobes of the cerebellum?
Anterior lobe
Posterior lobe
Flocculonodular lobe
Where in the skull can the cerebellum be found?
Posteror cranial fossa
What are the structures which anchor the cerebellum to the brainstem?
Peduncles - superior, middle (biggest) and inferior.
What is the name of the area between the two sides of the cerebellum?
Vermis
What are the 3 layers of the cerebellar cortex?
Molecular layer (outer) Purkinje Cell layer (middle) Granular layer (inner)
Which cells of the cerebellum communicate with the brain to co-ordinat movement? (output)
Purkinje Cells
What are the inputs to the cerebellum?
1) Spinal cord - proprioceptors, pressure re captors
2) Cerebral cortex
3) Vestibular apparatus
What type of spinal tract does the cerebellum influence?
Motor
Each cerebral hemisphere influences which side of the body?
Ipsilateral
What does the midline of the cerebellum control?
Posture
Where can the basal ganglia be found?
Base of each cerebral hemisphere
What are the functions of the basal ganglia?
1) Facilitate purposeful movement
2) Inhibit unwanted movement
3) Posture & muscle tone
At its very basis - what are the 5 subsections of the basal ganglia?
1) Caudate nucleus
2) Putamen
3) Globus Pallidus
4) Subthalamic nucleus
5) Substantia Nigra
What is the basal ganglia?
A number of masses of grey matter.
