1. The Nervous pathway
山东大学医学院 解剖教研室
李振华

2. Conscious proprioceptive and fine touch pathway of trunk and limbs
Central thalamic
radiation
VPL
3°neurons
Medial lemniscus
Gracile and cuneate nuclei
2°neuron
Decussation of medial lemniscus
Fasciculus cuneatus T4
Fasciculus gracilis
Spinal ganglion
1°neuron

3. Unconscious proprioceptive pathway of trunk and limbs
Superior cerebellar peduncle
Inferior cerebellar peduncle
Anterior
Spinocerebellar
tract
Posterior spinocerebellar tract
Lamina Ⅴ-Ⅶ
Nucleus
thoracicus
Spinal ganglion

4. Pain, temperature and crude touch pathway of trunk and limbs
Central thalamic
radiation
VPL 3°neurons
Spinal lemniscus
anterior spinothalamic tract
LaminaⅠ,Ⅳ~Ⅶ
2°neuron
Lateral spinothalamic tract
Spinal ganglia
1°neuron

6. Pain, temperature and crude touch pathway of head and face
Central
thalamic
radiation
VPM
3°neurons
Pontine nucleus of V
2°neuron
Trigeminal lemniscus
Trigeminothalamic tract
Trigeminal ganglion
Geniculate ganglion of facial n.
Sup. ganglions of glossopharangeal n. and vagus n.
1°neuron
Spinal tract of trigeminal n.
Spinal nucleus of V
2°neuron

7. Afferent Pathway for Visual Acuity?

8. Normal Mono-ocular Field of Vision

9. 80-90 degrees temporal.
45 degrees medial. Limited by nose
Eye brows limit upward field

10. Visual pathway
Optic nerve
Optic chiasma
Optic tract
Lateral geniculate body
Describe and locate the lesion for each visual field defect
Optic radiation
Visual area

11. Optic nerve
Optic chiasma
Optic tract
Lateral geniculate
body
Optic radiation
Visual area

12. Pathway for papillary light reflex?

13. Pathway for pupillary light reflex
Sphincter pupil
Ciliary muscle
Ciliary ganglia
Occculomotor n.
Accessory oculomotor nuclei
Pretectal area

14. Sphincter pupil
Ciliary muscle
Ciliary ganglia
Occculomotor n.
Accessory oculomotor nuclei
Pretectal area

15. Note direct and consensual pupillary light reflex

16. Auditory pathway Transverse temporal gyrus Acoustic radiation
Medial geniculate body
Inferior coliculus
Cochlear nuclei
Lateral lemniscus
Trapezoid body
Cochlear nerve
Spinal organ
Bipolar neuron of cochlear ganglion

17. Corticospinal tract upper motor neuron Corticospinal tract
Decussation of pyramid
Lateral corticospinal tract
Anterior corticospinal tract
Lower motor neuron

18. Corticonuclear tract Nucleus of oculomotor n. Nucleus of trochlear n.
Motor nucleus of trigeminal n.
Nucleus of abducent n.
Sup. part of nucleus of facial n.
Inf. part of nucleus of facial n.
Nucleus of ambiguus
Nucleus of hypoglossal n.
Nucleus of accessory n.

20. Extrapyramidal System 锥体外系

21. Extrapyramidal system

22. Babinski reflex - an UMN sign
Adult response - plantar flexion of the big toe and adduction of the smaller toes
Pathological (Infant) response - dorsoflexion (extension) of the big toe and fanning of the other toes
Indicative of upper motor neuron damage