The function of Merkel cells in the skin is to:
a. Acquire and present antigens to lymphocytes
b. Function as mechanoreceptors that respond to pressure
c. React to heat via temperature-sensitive calcium channels
d. Synthesize melanin
e. Synthesize the bulk of keratin within the skin
ANS: B
Merkel cells possess intracellular vesicles that resemble those of synapses and furthermore contact sensory nerve endings adjacent to the stratum basale. They have been shown to react to me-chanical stimulation.
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