Point
3
Intro
|
Point 3. Spinal Nucleus and Tract of the Trigeminal (CN V) |
|
The trigeminal nerve is the largest cranial nerve. It contains both sensory and motor fibers. The motor fibers innervate the muscles of mastication and arise from motor neurons in the pons. The general sensory fibers convey information regarding pain, temperature, touch, and conscious and unconscious proprioception. At this time I want to talk about those general sensory fibers that are conveying PAIN and TEMPERATURE because they are associated with a nucleus and tract in the caudal medulla (where we are now!). We will talk about the other general sensory nuclei and fibers (two point discrimination, conscious proprioception and vibratory sense), as well as the motor fibers associated with the trigeminal, later when we look at sections through the rostral pons. |
|
 |
 |