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Tactile corpuscles or Meissner's corpuscles are a type of mechanoreceptor discovered by anatomist Georg Meissner (1829–1905) and Rudolf Wagner. [1][2] This corpuscle is a type of nerve ending in the skin that is responsible for sensitivity to pressure. In particular, they have their highest sensitivity (lowest threshold) when sensing ...
Mechanoreceptor. A mechanoreceptor, also called mechanoceptor, is a sensory receptor that responds to mechanical pressure or distortion. Mechanoreceptors are innervated by sensory neurons that convert mechanical pressure into electrical signals that, in animals, are sent to the central nervous system.
There are four main types of mechanoreceptors in the glabrous skin of humans: Pacinian corpuscles, Meissner's corpuscles, Merkel's discs, and Ruffini corpuscles. The Naked mole-rat (Heterocephalus glaber) has evolved skin lacking in general, pelagic hair covering, yet has retained long, very sparsely scattered tactile hairs over its body. [3]
In humans, Merkel cells along with Meissner's corpuscles occur in the superficial skin layers, and are most densely clustered beneath the ridges of the highly sensitive fingertips which make up fingerprints, and less so in the palms and forearm. In hairy skin, Merkel nerve endings are clustered into specialized epithelial structures called ...
The Pacinian corpuscle, lamellar corpuscle or Vater-Pacini corpuscle[1] is one of the four major types of cutaneous receptor a type of mechanoreceptor (specialized receptor for mechanical sensation) found in mammalian skin. This type of mechanoreceptor is found in both hairy, and hairless skin, organs, joints, and attached to the periosteum of ...
The submucosal plexus (Meissner's plexus, plexus of the submucosa, plexus submucosus) lies in the submucosa of the intestinal wall. The nerves of this plexus are derived from the myenteric plexus which itself is derived from the plexuses of parasympathetic nerves around the superior mesenteric artery. Branches from the myenteric plexus ...
Tactile discrimination is the ability to differentiate information through the sense of touch. The somatosensory system is the nervous system pathway that is responsible for this essential survival ability used in adaptation. [1] There are various types of tactile discrimination. One of the most well known and most researched is two-point ...
There are four types of mechanoreceptors: Meissner corpuscles and merkel cell neurite complexes, located between the epidermis and dermis, and Pacinian corpuscles and Ruffini endings, located deep within the dermis and subcutaneous tissue. Mechanoreceptors are classified in terms of their adaptation rate and the size of their receptive field.