Card 12 / 60: Which are true about somatic sensation: (circle all that apply) (3 points)
A) DRG neurons innervating Pacinian corpuscles and encoding vibration make synapses on dorsal horn neurons of the ascending anterolateral system.
B) The receptive fields of dorsal root ganglion cells are shaped by inhibitory feedback from the thalamus
C) TRPV1 channels are activated by high temperatures, capsaicin and low pH
D) Dorsal root ganglia contain the sensory neurons innervating Meissner corpuscles and Merkel cells, joint and tendon organs, and muscle spindles, but not the nociceptive (C-fiber) neurons with free nerve endings in the skin.
E) Skin near whiskers has many more Meissner corpuscles per cm2 than the skin of the upper arm.

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