Globus pallidus
Globus Pallidus
The Globus Pallidus (pronunciation: /ˈɡloʊbəs pəˈlɪdəs/) is a subcortical structure of the brain that is part of the basal ganglia. The term "globus pallidus" is Latin for "pale globe", reflecting its appearance in fresh brain tissue.
Etymology
The term "globus pallidus" is derived from Latin, with "globus" meaning "globe" and "pallidus" meaning "pale". This name was given due to the pale appearance of this structure in fresh brain tissue.
Structure
The globus pallidus is divided into two parts: the Globus Pallidus Internus (GPi) and the Globus Pallidus Externus (GPe). These two parts have different functions and connections within the brain.
Function
The globus pallidus plays a crucial role in the regulation of voluntary movement. It is part of the basal ganglia motor loop, which is responsible for the selection and inhibition of specific motor actions.
Related Terms
- Basal Ganglia: A group of nuclei in the brain associated with a variety of functions including control of voluntary motor movements, procedural learning, and habit formation.
- Globus Pallidus Internus (GPi): The inner segment of the globus pallidus, which sends inhibitory signals to the thalamus.
- Globus Pallidus Externus (GPe): The outer segment of the globus pallidus, which sends inhibitory signals to the subthalamic nucleus.
See Also
External links
- Medical encyclopedia article on Globus pallidus
- Wikipedia's article - Globus pallidus
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