Cerebellum Brain stem

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Cerebellum Brain stem
(c) Gabriela Spulber 2005
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Cerebellum

• Median part vermis
• Lateral parts cerebellar hemispheres

(c) Gabriela Spulber 2005
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Cerebellum

• Primary fissure
• Horizontal fissure
• Posterolateral fissure
• Lobes
• Anterior
• Posterior
• Flocculonodular
• Vermis

(c) Gabriela Spulber 2005
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Cerebellar peduncules

• Connect the cerebellum with the brain stem
• Superior
• Middle
• Inferior

(c) Gabriela Spulber 2005
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Cerebellar nuclei

• Dentate nc.
• Emboliform nc.
• Globose nc.
• Fastigial nc.

(c) Gabriela Spulber 2005
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Brain stem

• Mesencephalon
• Pons
• Medulla oblongata

• Cranial nerves nuclei
• Specific nuclei
• Ascending and descending pathways

(c) Gabriela Spulber 2005
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Mesencephalon

• Tectum ? supinf colliculi
• Cerebral peduncles ? tegmentum basis pedunculi

(c) Gabriela Spulber 2005
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Tegmentum

• III, IV nc.
• Red nc.
• Reticular formation

Basis pedunculi

• Substantia nigra pars compacta /reticularis
• Pess pedunculi descending pathways

(c) Gabriela Spulber 2005
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Mesencephalon
(c) Gabriela Spulber 2005
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Pons

• Ventral part pontine nc and fibre bundles
• transversal (pontocerebellar tracts)
• longitudinal (corticospinal tract)
• Dorsal part the pontine tegmentum
• medial lemniscus
• spinotalamic tract
• lateral lemniscus

(c) Gabriela Spulber 2005
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(c) Gabriela Spulber 2005
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Medulla oblongata

• Pyramidal decussation
• Inferior olivary nc.
• Cranial nerves VIII, IX, X, XII nc.

(c) Gabriela Spulber 2005
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Cranial nerves

• I olphactory n. (S)
• II optic n. (S)
• III occulomotor n. (M/S)
• IV trochleary n. (M)
• V trigeminal n. (M/S)
• VI abducens n. (M)
• VII facial n. (M/S)

• VIII vestibulo- cochlear n. (S)
• IX glosso-pharyngeal n. (M/S)
• X vagus n. (M/S)
• XI accessory n. (M)
• XII hypoglossal n. (M)

(c) Gabriela Spulber 2005
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Rhomboid fossa

• Hypoglossal trigone
• Vagal trigone
• Area postrema
• Vestibular area
• Locus coeruleus
• Facial colliculus

(c) Gabriela Spulber 2005