Which of the following are unencapsulated tactile receptors that are in direct contact with the epidermis and respond to sensory neurons at swollen synapses called tactile discs?
A) tactile corpuscles
B) root-hair plexuses
C) Merkel cells
D) Meissner's corpuscles
C
Explanation:
A) Tactile corpuscles are encapsulated receptors.
B) Root-hair plexuses are unencapsulated tactile receptors composed of sensory neuron dendrites wrapped around hair roots.
D) Meissner's corpuscles are encapsulated tactile corpuscles.
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