Brain: Cerebellar tonsils
Under surface of the cerebellum. (Tonsil visible at center right.)
Sagittal section of the cerebellum, near the junction of the vermis with the hemisphere. (Tonsil visible at bottom center.)
Latin tonsilla cerebelli
Gray's subject #187 791
Part of
Cerebellum
Components
Artery
PICA
Vein
BrainInfo/UW hier-668
MeSH [1]
The cerebellar tonsil (amygdaline nucleus ) is a rounded mass, situated in the hemispheres of the cerebellum .
Pathology Arnold-Chiari malformation is a congenital anomaly of the brain in which the cerebellar tonsils are elongated and pushed down through the opening of the base of the skull (see foramen magnum ), blocking the flow of cerebrospinal fluid (CSF).
This article was originally based on an entry from a public domain edition of Gray's Anatomy . As such, some of the information contained herein may be outdated. Please edit the article if this is the case, and feel free to remove this notice when it is no longer relevant.
Brain : rhombencephalon (hindbrain)
Metencephalon /pons
surface: Locus ceruleus
Trigeminal lemniscus (Dorsal trigeminal tract , Ventral trigeminal tract )
cranial nuclei :GSA : Principal V /Spinal V - VIII-c (Dorsal , Anterior )/VIII-v (Lateral , Superior , Medial , Inferior ) - SVE : Motor V - VII - GSE : VI - GVE : VII: Superior salivary nucleus
MLF, III, IV and VI (vestibulo-oculomotor fibers , medial vestibulospinal tract )
sensory/ascending: Trapezoid body/VIII - Superior olivary nucleus
Inferior cerebellar peduncle (Vestibulocerebellar tract )
motor/descending: Apneustic center • Pneumotaxic center (Medial parabrachial nucleus ) - Lateral parabrachial nucleus
Middle cerebellar peduncles (Pontocerebellar fibers ) - Pontine nuclei motor/descending: Corticospinal tract - Corticobulbar tract - Corticopontine fibers
Raphe/reticular
Reticular formation (Caudal , Oral , Tegmental , Paramedian ) • Raphe nuclei (Median )
Myelencephalon /medulla
Dorsal
surface: Posterior median sulcus - Postero-lateral sulcus - Area postrema
cranial nuclei :GVA : VII,IX,X: Solitary /tract • SVA : Gustatory nucleus • GSE : XII • GVE : IX,X,XI: Ambiguus • SVE : X: Dorsal • IX: Inferior salivatory nucleus - MLF, III, IV and VI
sensory/ascending: Gracile nucleus • Cuneate nucleus (Accessory cuneate nucleus ) • Sensory decussation • Medial lemniscus
motor/descending: Dorsal respiratory group
Ventral
motor/descending: Ventral respiratory group - Pyramid (Motor decussation ) - Inferior olivary nucleus (Olivocerebellar tract , Rubro-olivary tract )surface: Anterior median fissure - Antero-lateral sulcus - Arcuate nucleus of medulla - Olivary body
Raphe/reticular
Reticular formation (Gigantocellular , Parvocellular , Ventral , Lateral , Paramedian ) • Raphe nuclei (Obscurus , Magnus , Pallidus )
Edit
