Respuesta :
Option a and b are correct.
the superficial portion of the dermisgroup is called the papillary region includes touch receptors called Meissner's corpuscles.
Skin-based touch receptors are a subtype of sensory neuron that respond to mechanical stimulus. They have specific ends. Touch receptors therefore communicate with the central nervous system about tactile inputs as a component of the somatosensory system.
Mechanoreceptors fall into one of three categories: baroreceptors, proprioceptors, or tactile. Due to the physical distortion of their plasma membranes, mechanoreceptors detect stimuli. They contain mechanically-gated ion channels, which respond to pressure, touch, stretching, and sound by opening or closing their gates. Merkel's discs, Meissner's corpuscles, Ruffini endings, and Pacinian corpuscle are the four basic tactile mechanoreceptors found in human skin; two of these structures are found closer to the skin's surface and two are deeper. Krause end bulbs, a fifth variety of mechanoreceptor, are exclusively found.
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