How to draw different sections of the brain

How to draw different sections of the brain stem Sanjaya Adikari Department of Anatomy

Posterior surface Anterior surface

Main nerve tracts in the spinal cord B A C G F E D

A. Posterior white columns B. Lateral corticospinal tract C. Anterior & posterior spinocerebellar tracts D. Anterior & posterior spinothalamic tracts E. Olivospinal, vestibulospinal, tectospinal tracts F. Anterior corticospinal tract G. Rubrospinal tract

Closed medulla at the level of decussation of pyramids Spinal tract of trigeminal nerve Fasciculus gracilis Nucleus gracilis Fasciculus cuneatus Nucleus cuneatus Spinal nucleus of trigeminal nerve Spinal root of the accessory nerve Posterior spinocerebellar tract Central canal Spinothalamic tract Medial longitudinal fasciculus Anterior spinocerebellar tract Decussation of pyramids Pyramid

Closed medulla at the level of decussation of medial lemnisci Fasciculus gracilis Spinal tract of trigeminal nerve Nucleus gracilis Fasciculus cuneatus Nucleus cuneatus Spinal nucleus of trigeminal nerve Central canal Medial longitudinal fasciculus Posterior spinocerebellar tract Spinal root of the accessory nerve Spinothalamic tract Anterior spinocerebellar tract Decussation of medial lemnisci Hypoglossal nerve Pyramid

Medulla Oblongata at the level of middle of the olivary nuclei Inferior medullary velum Cavity of 4 th ventricle Medial longitudinal fasciculus Spinal tract & nucleus of trigeminal nerve Vestibular & cochlear nuclei Inferior cerebellar peduncle Vagus nerve Anterior spinocerebellar tract Reticular formation Spinothalamic tract Olivary nucleus Tectospinal tract Olive Medial lemniscus Pyramid Hypoglossal nerve

Pons at the level of facial colliculus Cavity of 4 th ventricle Superior medullary velum Medial longitudinal fasciculus Superior cerebellar peduncle Facial colliculus Reticular formation Vestibular nuclei Inferior cerebellar peduncle Spinal lemniscus Spinal tract & nucleus of trigeminal nerve Medial lemniscus Transverse pontine fibres Facial nerve Abducent nerve Corticospinal & corticonuclear fibres Pontine nuclei

Midbrain at the level of inferior colliculus Periaqueductal Gray Matter Cerebral aqueduct Trigeminal lemniscus Spinal lemniscus Trochlear nerve Inferior colliculus Mesencephalic nucleus of trigeminal nerve Medial longitudinal fasciculus Medial lemniscus Substantia nigra Reticular formation Cerebral peduncle Interpeduncular fossa Decussation of superior cerebellar peduncles

Midbrain at the level of superior colliculus Periaqueductal Gray Matter Cerebral aqueduct Superior colliculus Mesencephalic nucleus of trigeminal nerve Trigeminal lemniscus Spinal lemniscus Medial longitudinal fasciculus Medial lemniscus Substantia nigra Reticular formation Cerebral peduncle Red nucleus Oculomotor nerve

Medial longitudinal fasciculus PPRF = Paramedian pontine reticular formation