Which structure in the skin contributes to the sensation of touch?

The correct choice, Merkel cells, plays a crucial role in the sensation of touch. These specialized cells are located in the epidermis, particularly in areas of high tactile sensitivity, such as the fingertips. They are mechanoreceptors that respond to light touch and help convey signals related to texture and shape to the nervous system.

Merkel cells interact with sensory nerve endings, forming complexes that allow for the detection of fine details. This ability to discern tactile stimuli is essential for various tasks, from feeling the texture of objects to guiding movements based on touch feedback.

In contrast, xerophytes refer to plants that thrive in dry environments and are not related to skin structure or touch sensation. Sebaceous glands are responsible for oil production in the skin, contributing to moisture and protection but not directly involved in touch perception. Hair follicles support hair growth and can contribute to sensing movement through hair displacement but do not directly contribute to the detection of finer tactile stimuli as Merkel cells do.