What type of cells are found deep in the epidermis that serve as touch receptors?

Merkel cells are specialized cells located in the basal layer of the epidermis that function as mechanoreceptors for touch sensation. They are specifically sensitive to light touch and pressure, playing a crucial role in the sense of texture and shape. These cells are typically found in areas of the skin that are more sensitive, like fingertips and hair follicles, where tactile response is vital for interaction with the environment.

In contrast, melanocytes are responsible for producing melanin, the pigment that gives skin its color and protects against UV radiation. Fibroblasts are cells found in connective tissue that play a key role in wound healing and produce collagen and extracellular matrix. Langerhans cells are part of the immune system and help in protecting the skin against pathogens.

Thus, the unique function of Merkel cells as touch receptors makes them the correct choice for this question.