PYRAMIDAL SYSTEM Flashcards
Inhibit or facilitates voluntary movement; hypothalamus controls sympathetic and parasympathetic outflows.
A. Corticotectospinal
B. Corticovestibulospinal
C. Corticoreticulospinal
D. Corticorubrospinal
C. Corticoreticulospinal
Facilitates activity of the flexor muscles and inhibits activity of the extensor muscles.
A. Corticotectospinal
B. Corticovestibulospinal
C. Corticoreticulospinal
D. Corticorubrospinal
D. Corticorubrospinal
Facilitates activity of extensor muscles and inhibits activity of flexor muscles.
A. Corticotectospinal
B. Corticovestibulospinal
C. Corticoreticulospinal
D. Corticorubrospinal
B. Corticovestibulospinal
Reflex postural movements.
A. Corticotectospinal
B. Corticovestibulospinal
C. Corticoreticulospinal
D. Corticorubrospinal
A. Corticotectospinal
The following are manifestations of clinical disorders of extrapyramidal system EXCEPT:
A. Presence of tremors, chorea, athetosis, dystonia
B. Hypertonus of the limb and trunk flexors
C. Clasp knife +- rigidity
D. Normal or slightly increased tendon reflex
C. Clasp knife +- rigidity
Receptive part of the basal ganglia.
Striatum mainly the putamen.
Output nuclei of the basal ganglia.
Palligum medial (interna) and Substantia Nigra Pars Reticulata
Neurotransmitters of the direct pathway.
Glutamate and dopamine
Trace the prepyramidal circuit.
Cerebral cortex ➡️ Striatum ➡️ Globus Pallidus ➡️ Thalamus ➡️ PreMotor or Supplemental Motor Cortex ➡️ Primary motor cortex
Principal location of a unilateral plastic rigidity with static tremor (Parkinson’s disease)
Contralateral Subthalamic Nuclei
A lesion on the contralateral subthalamic nucleus will result to….
Unilateral hemiballisimus and hemichorea
Athetosis and dystonia are caused by a lesion on..
Contralateral striatum
A lesion on the ipsilateral cerebellar hemisphere; middle and inferior cerebellar peduncles; brachium conjuctivum will result to..
Cerebellar incoordination
A lesion on the bilateral tegmentum of the upper brainstem at the level of the red nucleus will result to…
Decerebrate rigidity
The following are positive symptoms of a basal ganglia disease EXCEPT:
A. Bradykinesia
B. Ballisimus
C. Chorea
D. Athetosis
A. Bradykinesia
Cerebellar longitudinal zone responsible for eye and body movements with respect to gravity and movement of head in space.
Vermian
Vermia zone goes through..
Fastigial
Cerebellar longitudinal zone responsible for the coordination of ipsilateral movements.
Lateral zone
The lateral zone goes through the…
Dentate
The paravermian or intermediate zone goes through..
Globose and emboliform
The paravermian zone is responsible for…
Postural tone and individual movement of ipsilateral limbs
Deep nucleus of the cerebellum responsible for the initiation of volitional movements.
Dentate
