Answer:
(C) anterior spinothalamic and posterior columns.
Explanation:
The anterior and posterior spinothalamic columns are sensory tracts found in all segments of the spinal cord, the first are motor and the second sensory.
The anterior column has a large number of neurons in the cervical and lumbosacral regions, in these regions the anterior columns present two groups of neurons, the medial group (for the proximal limb muscles) and the lateral group (for the distal limb muscles). .
The posterior column receives sensory stimuli. The different sensory categories reach the posterior column at certain points. At the apex of the posterior column the afferences are from the spinothalamic tract for pain modulation (area known as gelatinous substance).
