Pain Tutorial

Ascending and descending pathways of the spinal cord

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Option A

As in the previous question, ignoring synapses for the moment, begin at either point M or N and use the letters indicated on the diagram to describe the route of the major efferent pathway for motor output. As you type, the pathway you have chosen will be indicated. When you are happy with your pathway, click "Check answer".

Now type the letter(s) corresponding to the synapse(s) where synaptic transfer occurs.

A: right spinal nerve
B: right spinal cord
C: left spinal cord
D: right spinal nerve
E: right gracile/cuneate nuclei
F: white matter in right pons
G: white matter in left pons

H: left gracile/cuneate nuclei
I: right internal capsule
J: right thalamus
K: left thalamus
L: left internal capsule
M: right cortex
N: left cortex