Q. Which of the following statements is correct regarding receptors in the skin?
A) All skin receptors are encapsulated
B) The receptive fields of touch receptors are uniform in area
C) The nociceptors of the skin are bare nerve endings
D) All sensory information from the skin reaches the brain $via$ the dorsal column pathway
Explanation
Nociceptors (itch and pain) and thermoreceptors are bare nerve endings. The receptive fields vary across the skin being smallest in the most distal regions ($e.g.,$ fingertips, lips). Sensory information from the skin reaches the brain $via$ several pathways most notably the dorsal column pathway and the spinothalamic tract.
Reviewed by Dr. Abubacker
Physics Educator & NEET/JEE Specialist
Ph.D. in Physics with 19+ years of teaching experience.