sensory components of the spinal nerve
general somatic afferent (GSA)
general visceral afferent (GVA)
接收體表、肌肉、肌腱、關節的感覺訊息
接收內臟的感覺訊息
exteroceptive(體表)
proprioceptive GSA (肌肉、肌腱、關節)
exteroceptive GSA-1
exteroceptive GSA-2
mechanical, thermal, chemical刺激
Aδ和C fiber傳遞 (慢)
lateral division of the posterior root
posterolateral tract (tract of Lissauer)
laminae I到V
discriminative touch, vibratory刺激
Aβ fiber傳遞 (快)
medial division of the posterior root
posterior funiculus
stretch, pressure, vibration的刺激
傳導快
medial division of the posterior root
posterior funiculus
傳遞慢
splanchnic nerve sympathetic chain & white communicating ramus
lateral division of the posterior root
laminae I & V-VII