What type of cells are the least numerous in the epidermis and are responsible for the sensation of touch?

Merkel cells are specialized skin cells found in the epidermis that play a crucial role in the sensation of touch. These cells are mechanoreceptors that respond to light touch and pressure, allowing us to detect fine tactile stimuli. They are typically located in the basal layer of the epidermis and are associated with nerve endings, forming Merkel discs. This connection aids in the transmission of sensory information to the brain.

While keratinocytes make up the majority of the epidermal cells and are primarily responsible for forming the protective barrier, melanocytes are involved in producing melanin, which gives skin its color and provides some protection against UV radiation. Langerhans cells function as part of the immune system, helping to identify and respond to pathogens that invade the skin. In contrast, Merkel cells are specifically designed for sensory perception, making them unique in their function and confirming their role as the least numerous cells responsible for touch sensation in the epidermis.