Flocculus
Flocculus
Flocculus (pronunciation: /ˈflɒkjʊləs/) is a small but significant structure in the brain that is part of the cerebellum. It plays a crucial role in the maintenance of balance and coordination of movements.
Etymology
The term "flocculus" is derived from the Latin word "floccus", which means a small tuft of wool. This is in reference to the appearance of the flocculus, which resembles a small tuft or cluster.
Anatomy
The flocculus is part of the vestibulocerebellum, which is the oldest part of the cerebellum in evolutionary terms. It is located near the middle cerebellar peduncle, an area that transmits information from the cerebral cortex and spinal cord to the cerebellum. The flocculus works in conjunction with the nodulus of the vermis to receive input from the vestibular system and influence the output of the vestibular nuclei.
Function
The flocculus plays a significant role in the vestibulo-ocular reflex (VOR), which is a reflex eye movement that stabilizes images on the retina during head movement. It helps to maintain balance and coordinate eye and head movements, particularly during rotational movements.
Related Terms
- Cerebellum: The part of the brain at the back of the skull in vertebrates, to which the flocculus belongs. Its function is to coordinate and regulate muscular activity.
- Vestibulocerebellum: The part of the cerebellum involved in the regulation of balance and eye movements.
- Vestibulo-ocular reflex (VOR): A reflex eye movement that stabilizes images on the retina during head movement by producing an eye movement in the direction opposite to head movement.
External links
- Medical encyclopedia article on Flocculus
- Wikipedia's article - Flocculus
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