Brain: Flocculus
Schematic representation of the major anatomical subdivisions of the cerebellum. Superior view of an "unrolled" cerebellum, placing the vermis in one plane.
Under surface of the cerebellum. ("Flocculus" labeled at upper right.)
Gray's	subject #187 791
Part of	Cerebellum
System	Vestibular
Artery	PICA
NeuroNames	hier-677
NeuroLex ID	birnlex_1329

The flocculus is a small lobe of the cerebellum at the posterior border of the middle cerebellar peduncle anterior to the biventer lobule.

It is associated with the nodulus of the vermis; together, these two structures compose the vestibular part of the cerebellum.

At its base, the flocculus receives input from the middle ears vestibular system and regulates balance. Many floccular projections descend to the spinal cord and connect to the motor nuclei involved in control of eye movement.

[edit] Additional images

Human cerebellum anterior view

[edit] External links

• Flocculus at eMedicine Dictionary
• Atlas of anatomy at UMich n2a7p4
• NIF Search - Flocculus via the Neuroscience Information Framework

v • d • e Human brain, rhombencephalon, metencephalon: cerebellum (TA 14.1.07, GA 9.788) Surface anatomy Posterior lobe (Horizontal fissure) · Anterior lobe · Flocculonodular lobe (Flocculus, Nodule) Vermis: posterior (Folium, Tuber, Uvula) · anterior (Central lobule, Culmen, Lingula) Hemisphere: posterior (Biventer lobule, Cerebellar tonsil) · anterior (Alar central lobule) Vallecula of cerebellum · Primary fissure Grey matter Deep cerebellar nuclei Dentate · interposed (Emboliform, Globose) · Fastigial Cerebellar cortex Molecular layer (Stellate cell, Basket cell) Purkinje cell layer (Purkinje cell, Bergmann glia cell = Golgi epithelial cell) Granule cell layer (Golgi cell, Granule cell, Unipolar brush cell) Fibers: Mossy fibers · Climbing fiber · Parallel fiber White matter Internal Arbor vitae Peduncles Inferior (medulla): Dorsal spinocerebellar tract · Olivocerebellar tract · Cuneocerebellar tract · Juxtarestiform body (Vestibulocerebellar tract) Middle (pons): Pontocerebellar fibers Superior (midbrain): Ventral spinocerebellar tract · Dentatothalamic tract · Trigeminocerebellar fibers

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