Merkel discs
Merkel discs are specialized sensory receptors found in the skin, particularly in areas like the fingertips and lips. They are responsible for detecting light touch and pressure, allowing us to perceive fine textures and shapes. These discs are named after the German anatomist Friedrich Merkel, who first described them in the 19th century.
Structurally, Merkel discs consist of a cluster of Merkel cells that are closely associated with nerve endings. When the skin is touched, these cells release neurotransmitters that send signals to the brain, helping us interpret tactile information. This process is essential for our sense of touch and plays a crucial role in everyday activities.