L18: Motor System (Basal Ganglia) Flashcards
True or False: Both the Premotor cortex and the Supplementary Motor Cortex contribute to the CST
True
True or False: The Primary Motor Cortex allows for EXECUTION of a SIMPLE movement while the Premotor Cortex allows for complex motor responses (PLANNING MOTOR TASK)
True
Which cortex coordinates movement on both sides, as well as coordinates posture and voluntary movements?
A. Primary Motor Cortex
B. Premotor Cortex
C. Supplementary Motor Cortex
C. Supplementary Motor Cortex
True or False: The basal ganglia include (1) nuclei found deep within the cerebrum around the lateral ventricles AND (2) nuclei located in diencephalon and (3) midbrain
True
_____: Concerned with coordination of voluntary movements and, in particular, programming and planning movements
A. Striatum
B. Putamen
C. Basal Ganglia
D. Corpus Callosum
C. Basal Ganglia
Involuntary movements and alterations in muscle tone, suggests damage to which structures?
A. Globus Pallidus
B. Corpus Striatum
C. Basal Ganglia
C. Basal Ganglia
_______________:
Caudate + Putamen + Globus Pallidus
A. Striatum
B. Lenticular Nucleus
C. Corpus Striatum
C. Corpus Striatum
____: Caudate+Putamen
A. Striatum
B. Lenticular Nucleus
C. Corpus Striatum
A. Striatum
____: Globus pallidus + Putamen
A. Striatum
B. Lenticular Nucleus
C. Corpus Striatum
B. Lenticular Nucleus
True or False: The basal ganglia is found in the deep nuclei of telencephalon + diencephalon + midbrain
True
The basal ganglia helps to smoothly orchestrate motor behavior. In particular, to regulate the ___ of a movement
amplitude
Label the
- globus pallidus
- putamen
- corpus striatum
______: Large C shaped nucleus that lies in the lateral wall of the lateral ventricle
____ Crescent-shaped nucleus; similar to caudate nucleus
Caudate Nucleus
Putamen
True or False: The striatum contains populations of neurons that use either Ach or GABA
True
_____: Wedge-shaped nuclear complex located medial to the putamen; composed of internal and external secretions. Uses GABA (inhibitory)!!!!
A. Striatum
B Globus Pallidus
C. Substantia nigra
B Globus Pallidus
Which of the following provides the major output of the corpus striatum and projects to the VA/VL nuclei of the thalamus?
A. External (Lateral) Segment of the Globus Pallidus
B. Internal (Medial) Segment of the Globus Pallidus
B. Internal (Medial) Segment of the Globus Pallidus
True or False: Both the Internal (Medial) Segment of the Globus Pallidus and External (Lateral) Segment receive input from teh striatum
True
- note: internal segment also receives inputs from 1) external segment and 2) subthalamic nucleus
Which two places does the external segment of the globus pallidus project to?
1) Internal “medial” segment
2) Subthalamic Nucleus
What does the schema of the cortico-basal ganglia-thalamo-cortical loop look like??