Archicerebellum
Archicerebellum
Archicerebellum (pronunciation: ar-chi-cer-e-bel-lum) is the oldest part of the cerebellum in terms of evolution and development. It is also known as the Paleocerebellum.
Etymology
The term "Archicerebellum" is derived from the Greek words "archi" meaning "first" or "beginning", and "cerebellum" meaning "little brain".
Definition
The Archicerebellum is the part of the cerebellum that is involved in the regulation of balance and coordination of skeletal muscle tone. It receives input primarily from the vestibular system and sends output to the vestibular nuclei and reticular formation.
Related Terms
- Cerebellum: The part of the brain at the back of the skull in vertebrates, which coordinates and regulates muscular activity.
- Vestibular system: The sensory system that provides the leading contribution to the sense of balance and spatial orientation for the purpose of coordinating movement with balance.
- Vestibular nuclei: A group of nuclei in the brainstem that receive input from the vestibular system and output to the eyes, neck, and other areas to control balance and eye movements.
- Reticular formation: A set of interconnected nuclei that are located throughout the brainstem and are involved in multiple tasks such as regulating the cardiovascular system, breathing, sleep-wake cycle, and filtering incoming stimuli to discriminate irrelevant background stimuli.
External links
- Medical encyclopedia article on Archicerebellum
- Wikipedia's article - Archicerebellum
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