What are the three pathways that carry pain sensation from the periphery to the CNS?

A. Neospinal Thalamic Tract, Paleospinal Thalamic Tract, Archispinal Thalamic Tract
B. Dorsal Column-Medial Lemniscal Pathway, Spinothalamic Pathway, Trigeminothalamic Pathway
C. Frontal Lobe Pathway, Parietal Lobe Pathway, Occipital Lobe Pathway
D. Motor Pathway, Sensory Pathway, Autonomic Pathway

The three pathways for pain sensation from the periphery to the CNS are the Dorsal Column-Medial Lemniscal Pathway, Spinothalamic Pathway, and Trigeminothalamic Pathway, with the latter two responsible for transmitting pain from the body and face, respectively, to the somatosensory cortex, so the correct answer to this question is option b) Dorsal Column-Medial Lemniscal Pathway, Spinothalamic Pathway, Trigeminothalamic Pathway.

Explanation:

The three pathways that carry pain sensation from the periphery to the CNS are the Dorsal Column-Medial Lemniscal Pathway, Spinothalamic Pathway, and Trigeminothalamic Pathway. Among these, the Spinothalamic Pathway carries pain and temperature information from the body to the somatosensory cortex, while the Trigeminothalamic Pathway carries pain information from the head and face to the same region. Both these pathways are composed of three neurons that ultimately transmit the sensory information between the periphery and the primary somatosensory cortex. For injuries below the neck, pain information is transmitted by the spinothalamic tract beginning with nociceptor fibres that synapse with second-order neurons in the spinal cord's dorsal horn, which cross to the opposite side, or decussate, and ascend to the thalamus, with third-order neurons then projecting to the cortex. For the face, the trigeminal pathway involves nociceptor fibres that connect to the trigeminal ganglion, with axons entering the brainstem and relaying through the spinal trigeminal nucleus to the thalamus.