Trigeminal Fasciculus

Posterolateral view

Pulvinars of thalami Pineal body Superior colliculi Inferior colliculi Trochlear nerve (IV) Superior medullary velum Superior cerebellar peduncle

Gracile Tubercles

Gracile tubercle

Gracile fasciculus

•Thalamus (cut surface) Lateral geniculate body Optic tract

Medial geniculate body Brachia of superior and inferior colliculi Cerebral crus Pons

â– Trigeminal nerve (V) Middle cerebellar peduncle

Rhomboid fossa of 4th ventricle

Glossopharyngeal (IX) and vagus (X) nerves

Cuneate tubercle

Gracile tubercle

Dorsal roots of 1st spinal nerve (C1)

Cuneate fasciculus

Gracile fasciculus

Anterior view

Optic chiasm Optic tract Tuber cinereum Cerebral crus Lateral geniculate body Posterior perforated substance Pons

Middle cerebellar peduncle

Olive Pyramid

Ventral roots of 1st spinal nerve (C1) Decussation of pyramids

Vestibulocochlear nerve (VIII) Facial nerve (VII) Inferior cerebellar peduncle Hypoglossal nerve (XII) Accessory nerve (XI)

Posterior Perforated Substance

Olive Pyramid

Olfactory tract

Anterior perforated substance

Infundibulum (pituitary stalk)

Mammillary bodies

Temporal lobe (cut surface)

Oculomotor nerve (III)

Abducent nerve (VI)

Facial nerve (VII) and intermediate nerve

Vestibulocochlear nerve (VIII)

Flocculus of cerebellum

Choroid plexus of 4th ventricle

Glossopharyngeal nerve (IX) Vagus nerve (X) Hypoglossal nerve (XII) Accessory nerve (XI)

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