1. Chapter 21
Trigeminal nerve

3. Nuclei of trigeminal nerve
Motor nucleus
Sensory nuclei
mesencephalic
pontine (principal)
spinal
Muscles of mastication and tensor tympani muscle

4. Trigeminal (gasserian) ganglion Meckel’s cave

5. Mastication:
supratrigeminal nucleus
? Digastric muscle
Ant. Belly:
Post. Belly:

6. Mesencephalic nucleus
The only nucleus in CNS contains the cell bodies of primary sensory neurons
Propriception from the muscles of mastication

7. Pontine nucleus (類似: post. column )
Convey the touch and pressure (discriminative tactile) sensation from the oronasal cavity and face.
Crossed fibers:
trigeminal lemniscus
? Corneal reflex

8. Spinal nucleus
From the lower pons to the upper third cervical segment of the spinal cord
Pars oralis
Pars interpolaris
Pars caudalis (main)
mouth
Topographic representation

10. Pain, temperature, crossed fibers, trigeminothalamic tract

12. Mastication supratrigeminal nucleus
proprioception (mesencephalic nucleus)
tactile information (pontine nucleus)
nociceptive information (spinal nucleus)
Trigemincerebellar and trigeminothalamic projection
Premotor area
Motor nucleus

14. ? Sensation of the ear

15. Trigeminal nerve
Glossopharygeal and vagus nerves
Cervical nerves (first three)
Referred pain

16. Trigeminal neuralgia (三叉神經痛)