Answer
b. White matter
The anterior and lateral spinothalamic tracts are myelinated fiber tracts and hence are white matter in consistency.
Work Step by Step
The spinothalamic tract comprises anterior and lateral parts. These second order axons are myelinated and travel from synapses with first order neurons in the spinal cord to synapse with third order neurons in the thalamus.
The spinothalamic tracts transmits stimuli related to temperature, pain, pressure, light touch, tickle and itch.
