Unit 4 Flashcards
Cerebellum
Fill the blank: If the patient had lesions in the ___ or ___ they wouldn’t be able to sit up.
Vermis, Flocculonodular lobe
There are 6 joints being coordinated by the cerebellum with the finger to nose test. The ____ is where the heel of one foot run up and down along the shin of the other leg. Question 2:What joints are being coordinated here?
heel to shin test; Question 2: DIP, PIP,MCP, radiocarpal, Elbow and GH joints
What is it called when a patient sways when standing?
titubation
Which part of the basal ganglia degenerates in Parkinson’s patients?
Dopamine neurons in the substantia nigra
What neurotransmitter is deficient?
Dopamine
What is given to treat Parkinson’s patients (that can cross the blood brain barrier)?
L-DOPA
What is a phoneme?
a distinct unit of sound, like the “b” sound in the word bat.
What afferent pathway invloves the flocculonodular lobes?
vestibulocerebellar
This type of cortical neuron has short axons, and therefore acts as interneurons within the cerebral cortex
Granular (Stellate) cells
Which pathway through the basal ganglia executes learned patterns of movement?
Putamen circuit
what part of the cerebellum coordinates the muscles of the trunk, neck, shoulder, and hips?
Vermis
Layer VI of the cerebral cortex generally has what function?
output to the thalamus
What is NOT a symptom of Parkinson’s disease?
Intention tremor
The part of the brain that coordinates the motor activity for speech is
Broca’s area
Which deep cerebellar nucleus functions in coordination of distal limb agonists and antagonists?
interposed
What term refers to uncoordinated speech due to cerebellar damage?
dysarthria
The indirect inputs to the dentate nucleus come from what part of the cerebellar cortex?
lateral zone
The left hemisphere can understand
language
The right hemisphere sees whats on the left but cannot nsma it because it is
non-verbal
General function of the cerebellum is
Timing of motor activites,; controls Rapid muscle movements, contraction intensity with load change; controls agonist/antagonist coordination; Posture/equilibrium
General function of Basal Ganglia
plan/control comlex movement patterns; intensities of separate movements, driection of movement, sequencing of successive, parallel movents to achieve complex motor goals.
Cerebellar functional central zone
vermis
What is the function of the vermis?
control axial body, neck, shoulders and hips
What zones are included in hemispheres?
Intermedate and lateral zones
Which specific zone coordinates distal limbs, especially the hands and feet?
Intermediate zone of hemisphere
The lateral zone has what cerebral function?
planning sequential movements with the cerebral cortex
Cerebellum is connected to the brain via the
superior middle and inferior cerebellar peduncles
The tree structure in the white mater is called?
Arbor vitae
The gray mater is composed of
Folia of cerebellar cortex and Deep cerebellar nuclei
vermis and intermediate zones both have
toptgraphical representation
Axial parts, limbs and facial regions lie in the
Intermediate zones
Anterior and Posterior lobes of the cerebellar are
mirror images
Cerebellum Motot function
receives continuous updated info about intended motor actions; no direct motor contraction; Continuous sensory info (proprioception) for position and body movement; compares actual with intended movement, sends correct signal back to motor system;
what motor function aids cerebral corte in planning movement sequence while in motion and learns from mistakes?
cerebellum
