Which type of touch receptors are responsible for detecting pressure?

The type of touch receptors responsible for detecting pressure are the Pacinian corpuscles. These specialized mechanoreceptors are located deep within the skin and in various tissues throughout the body. Their structural characteristics enable them to respond to deep pressure and vibration. When pressure is applied, the layers of the Pacinian corpuscles deform, generating an action potential that is transmitted to the nervous system, signaling the sensation of pressure.

Pacinian corpuscles are particularly effective at detecting rapid changes in pressure, which distinguishes them from other types of touch receptors. Their unique onion-like structure allows them to be highly sensitive to high-frequency vibrations and sudden pressure changes, making them integral to our ability to perceive and respond to environmental stimuli associated with intensity and depth.

Other touch receptors, such as free nerve endings and Merkel cells, perform different functions. Free nerve endings are primarily responsible for detecting pain and temperature, while Merkel cells are sensitive to fine touch and texture. Meissner corpuscles detect light touch and are more responsive to changes in the tactile stimuli on the skin surface. Each receptor type plays a distinct role in our sensory perception, but for detecting pressure specifically, Pacinian corpuscles are paramount.