Which of the following cells is responsible for stimulating the sensory nerves of the part of the brain that senses touch and acts as a receptor?

Correct option is B

Answer: (b) Merkel cell
Explanation:
Merkel cells are specialized mechanoreceptor cells found in the epidermis, particularly in areas with high tactile sensitivity (e.g., fingertips, lips, and hair follicles). They are responsible for detecting light touch sensations and stimulating sensory nerves to transmit signals to the brain.
Other Options Explained:
· (a) Langerhans cells:
· These are immune cells in the skin that help fight infections but are not involved in touch sensation.
· (c) Basal cells:
· These are stem cells of the epidermis, responsible for producing new skin cells, but they do not function as sensory receptors.
· (d) Epithelial cells:
· General skin cells that provide protection, but they do not directly stimulate sensory nerves for touch.
Conclusion:
Since Merkel cells are the primary touch receptors, the correct answer is: (b) Merkel cell.