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What would happen to the cortical output to motor pathways if the projections from the substantia nigra pars compacta (SNC) that regulate the direct pathway were overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the internal segment of the globus pallidus (GPi) was overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the projection from the striatum to the external segment of the globus pallidus (GPe) was underactive? A. Decrease B. No change C. Increase

What would happen to the cortical output to motor pathways if the projections from the substantia nigra pars compacta (SNC) that regulate the direct pathway were overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the internal segment of the globus pallidus (GPi) was overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the projection from the striatum to the external segment of the globus pallidus (GPe) was underactive? A. Decrease B. No change C. Increase

Human Anatomy & Physiology (11th Edition)
Human Anatomy & Physiology (11th Edition)
11th Edition
ISBN:9780134580999
Author:Elaine N. Marieb, Katja N. Hoehn
Publisher:Elaine N. Marieb, Katja N. Hoehn
Chapter1: The Human Body: An Orientation
Section: Chapter Questions
Problem 1RQ: The correct sequence of levels forming the structural hierarchy is A. (a) organ, organ system,...
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Regulates direct. pathway SNC Regulates indirect pathway SNr Show Transcribed Text Cortex ++ ++ Indirect pathway Direct pathway Striatum GPe + Subthalamus GPi Descending motor pathways + Thalamus What would happen to the cortical output to motor pathways if the projections from the substantia nigra pars compacta (SNC) that regulate the direct pathway were overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the internal segment of the globus pallidus (GPi) was overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the projection from the striatum to the external segment of the globus pallidus (GPe) was underactive? A. Decrease B. No change C. Increase
Transcribed Image Text:Regulates direct. pathway SNC Regulates indirect pathway SNr Show Transcribed Text Cortex ++ ++ Indirect pathway Direct pathway Striatum GPe + Subthalamus GPi Descending motor pathways + Thalamus What would happen to the cortical output to motor pathways if the projections from the substantia nigra pars compacta (SNC) that regulate the direct pathway were overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the internal segment of the globus pallidus (GPi) was overactive? A. Decrease B. No change C. Increase What would happen to the cortical output to motor pathways if the projection from the striatum to the external segment of the globus pallidus (GPe) was underactive? A. Decrease B. No change C. Increase
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