Brain Stem 2nd

Brain stem ----Internal structure

Review gray matter cranial nuclei non-cranial nuclei

white matter long ascending pathways long descending pathways

reticular formation

I. The arrangements of cranial nerve nuclei

I. The arrangements of cranial nerve nuclei (1)The general somatic motor nuclei oculomotor nucleus trochlear nucleus abducent nucleus

hypoglossal nucleus

I. The arrangements of cranial nerve nuclei (2)The special visceral motor nuclei

motor nucleus of trigeminal n nucleus of facial nerve nucleus ambiguus spinal accessory nucleus

I. The arrangements of cranial nerve nuclei (3)The general visceral motor nuclei accessory oculomotor nucleus

superior salivatory nucleus inferior salivatory nucleus

dorsal nucleus of vagus nerve

I. The arrangements of cranial nerve nuclei (4)The general and special visceral sensory nucleus

nucleus of solitary tract

I. The arrangements of cranial nerve nuclei (5) The general somatic sensory nuclei mesencephalic nucleus of trigeminal nerve

pontine nucleus of trigeminal nerve spinal nucleus of trigeminal nerve

I. The arrangements of cranial nerve nuclei (6)The special somatic sensory nuclei

vestibular nuclei ＆ cochlear nuclei

II.The non-cranial nerve nuclei gracile nucleus cuneate nucleus pontine nucleus nucleus of inferior colliculus nucleus of superior colliculus red nucleus substantia nigra

cuneate nucleus

gracile nucleus

nucleus of inferior colliculus

nucleus of superior colliculus

substantia nigra red nucleus

Ⅲ.the white matter The long ascending pathways medial lemniscus spinothalamic lemniscus trigeminal lemniscus lateral lemniscus

The long descending pathways pyramidal tract

the long asending pathways: medial lemniscus

the long asending pathways:

spinothalamic tract

the long asending pathways:

trigeminal lemniscus

the long asending pathways: lateral lemniscus

Cochlear nuclei

trapezoid body and mediall lemniscus

Superior olivary nucleus

the long desending pathways: pyramidal tract corticospinal tract corticonuclear tract

Ⅳ. reticular formation

Ⅴ.the transverse sections of brain stem 1.The transverse section through caudal medulla

nuclei gracilis and cuneatus spinal trigeminal nucleus spinal trigeminal tract

2.The transverse section through rostal medulla

Hypoglossal nucleus Vestibular nucleus Dorsal nucleus of vagus Solitary nucleus

Nucleus ambiguous Spinal tract and nucleus of trigeminal nerve

3.The transverse section through cauda pons

Trapezoid body and medial lemniscus The pontine nuclei The nucleus of abducent nerve The vestibular nucleus The spinal nucleus and tract of trigeminal nerve The nucleus of facial nerve Lateral lemnicus begins

4.The transverse section through midpons

The superior and middle cerebellar peduncles

5.The transverse section through caudal midbrain

The nucleus of trochlear nerve The mesencephalic nucleus of trigeminal nerve A pair of nuclei of inferior colliculi Decussation of superior cerebellar peduncle The substantia nigra

6.The transverse section through rostal midbrain

The nucleus of oculomotor nerve A pair of red nuclei

oculomotor nucleus

back

trochlear nucleus

back

back

abducent nucleus

back

hypoglossal nucleus

back

motor nucleus of trigeminal nerve

back

nucleus of facial nerve

back nucleus ambiguus

back spinal accessory nucleus

accessory oculomotor nucleus

back

dorsal nucleus of vagus nerve

mesencephalic nucleus of trigeminal nerve

pontine nucleus of trigeminal nerve

spinal nucleus of trigeminal nerve