What is the primary role of Meissner corpuscles?

• A. Detecting heat
• B. Detecting light touch
• C. Detecting cold
• D. Detecting pressure

Answer: (B)

Meissner corpuscles are specialized sensory receptors located in the skin, primarily in areas that are sensitive to light touch, such as the fingertips, palms, and soles of the feet. Their primary role is to respond to tactile stimuli—specifically, they are responsible for detecting light touch and vibrations at lower frequencies. When light pressure is applied to the skin, these corpuscles are activated, sending signals to the nervous system that inform the brain about the sensation of touch.

This ability to perceive light touch is crucial for tasks that require fine motor skills and sensitivity, such as reading Braille or feeling textures. The structure of Meissner corpuscles allows them to respond rapidly to changes in touch, making them essential for detecting subtle tactile differences.

In contrast, other sensory receptors in the skin are responsible for detecting different types of stimuli, such as heat, cold, and pressure. These functions are attributed to other types of corpuscles and receptors, each tailored to specific sensations, which helps create a comprehensive understanding of the environment through various sensory inputs.