A<unk>  (FNE) is an unspecialized, afferent nerve<unk> , meaning it brings information from the body's periphery to the brain.<unk> s are unencapsulated and have no complex sensory structures, unlike those found in Meissner's or Pacinian corpuscles. They are the most common type of nerve<unk> , and are most frequently found in the skin. They penetrate the epidermis and end in the stratum granulosum. These nerve<unk> s are responsible for detecting temperature, mechanical stimuli (such as pressure), pain (nociception), and information about touch. Some FNEs can also detect stretch stimuli.
The majority of Aδ (A delta) fibers (group III) and C (group IV) fibers end as<unk> s.
Different types of FNE can be fast-adapting, intermediate, or slow-adapting. Aδ fibres are fast-adapting, while C fibers are slow-adapting.
Free nerve ending
Muscle fascicle
Postganglionic fibers
Afferent nerve
Dendrite
Nerve
Upper motor neuron
Lower motor neuron