山东大学：《神经解剖学》课程教学资源（PPT课件讲稿）脑干 The brain stem

The brain stem

The brain stem

The brain stem midbrain pons medulla oblongata ● Bulbopontine sulcus

The brain stem midbrain pons medulla oblongata ⚫Bulbopontine sulcus

ventral surface of the brain stem Medulla oblongata yramid contain pyramidal tract (corticospinal tract) Decussation of pyramid formed by crossing fibers of corticospinal tract Olive: overlying inferior olivary nucleus hypoglossal nerve emerge from anterolateral sulcus Glossopharyngeal n. emerge from vagus n. retroolivary sulcus accessory n

ventral surface of the brain stem Pyramid : contain pyramidal tract (corticospinal tract) Decussation of pyramid formed by crossing fibers of corticospinal tract emerge from retroolivary sulcus Medulla oblongata hypoglossal nerve emerge from anterolateral sulcus Glossopharyngeal n. vagus n. accessory n. Olive : overlying inferior olivary nucleus

ventral surface of the brain stem Pons Basilar part Basilar sulcus Bulbopontine sulcus from medial to lateral abducent n facial n vestibulocochlear n

Basilar part Basilar sulcus ventral surface of the brain stem Pons Bulbopontine sulcus from medial to lateral, abducent, n facial n. vestibulocochlear n

ventral surface of the brain stem Pons Middle cerebellar peduncle Trigeminal nerve Pontocerebellar trigone the junction of medulla, pons and cerebellum

ventral surface of the brain stem Pons Middle cerebellar peduncle Trigeminal nerve Pontocerebellar trigone the junction of medulla, pons and cerebellum

ventral surface of the brain stem Midbrain Crus cerebri Interpeduncular fossa oculomotor nerves emerge from medial of crus cerebri Posterior perforated substance

Crus cerebri Interpeduncular fossa oculomotor nerves emerge from medial of crus cerebri ventral surface of the brain stem Midbrain Posterior perforated substance

dorsal surface of the brain stem Medulla oblongata Gracile tubercle overlying gracile nucleus Cuneate tubercle overlying cuneate nucleus Inferior cerebellar

Gracile tubercle overlying gracile nucleus Cuneate tubercle overlying cuneate nucleus Inferior cerebellar peduncle dorsal surface of the brain stem Medulla oblongata

dorsal surface of the brain stem Pons Superior cerebellar peduncle Superior medullary velum

◼ Superior cerebellar peduncle ◼ Superior medullary velum dorsal surface of the brain stem Pons

dorsal surface of the brain stem Midbrain Superior colliculus centers of visual flexes Inferior colliculus conduct auditory sensation Trochlear nerve Brachium of superior colliculus Brachium of inferior colliculus

Superior colliculus centers of visual flexes Inferior colliculus conduct auditory sensation Trochlear nerve dorsal surface of the brain stem Midbrain Brachium of superior colliculus Brachium of inferior colliculus

dorsal surface of the brain stem rhomboid fossa Boundaries Superolateral: superior cerebellar peduncle 制 Inferolateral gracile tubercles cuneate tubercles inferior cerebellar peduncle Lateral recess

Inferolateral: gracile tubercles cuneate tubercles inferior cerebellar peduncle Boundaries rhomboid fossa Superolateral: superior cerebellar peduncle Lateral recess dorsal surface of the brain stem