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The dorsal column or medial lemniscus.
Each spinal nerve attaches to spinal cord by a ventral (anterior) root and a dorsal (posterior) root.All spinal nerves are mixed nerves (both motor and sensory).
from spinal nerve to posterior (dorsal) root
spinal cord
Both Afferent and Efferentboth sensory and motorContains motor & sensory fibers!The spinal cord consists of nerve fibers that are afferent and efferent.
First order sensory neurons begin in the receptor, travel to dorsal/posterior gray horn of the spinal cord where they synapse with the second order sensory neurons.
Spinal nerves are said to be mixes because their posterior roots contain sensory axons and their anterior roots contain motor axons.
Sensory information
Sensory neurons gather information and send it to your spinal cord.
The spinal cord is posterior to the sternum.
spinothalamic
spinothalamic