Skin receptors: Meissner, Pacinian, Merkel, Ruffini and free nerve endings !
- Cell
Tiny nerve endings in the skin feel touch, vibration, stretch, heat, cold and pain, each type tuned to its own job.
Updated 2026-11-01
See it in 3D: Skin
What it is
The skin's sensory receptors are the endings of sensory neurons, some bare and some wrapped in capsules or paired with a special epidermal cell. Their depth and their capsule decide what they detect and whether they keep firing (slow adaptation) or fire only at the start and end of a stimulus (rapid adaptation). Loss of these endings in diabetic neuropathy is why the foot stops feeling injuries.
Structure
- Meissner corpuscle: oval, a few axon branches spiralling between stacked flattened Schwann-like cells, inside a dermal papilla.
- Pacinian corpuscle: large and oval, like a sliced onion in H&E, with many concentric lamellae around one unmyelinated axon tip.
- Merkel cell: a clear cell in the basal layer of the epidermis, attached to keratinocytes by desmosomes, with a disc-shaped nerve ending beneath it.
- Ruffini corpuscle: a thin, spindle-shaped capsule with nerve endings woven among collagen fibres.
Skin receptors at a glance
| Receptor | Where | Senses | Adapts |
|---|---|---|---|
| Free nerve endings | Epidermis and dermis everywhere; also cornea | Pain, temperature, itch, crude touch | Mostly slow |
| Merkel cell–neurite complex | Stratum basale, densest in fingertips and lips | Sustained light pressure, shape and texture | Slow |
| Meissner corpuscle | Dermal papillae of hairless (glabrous) skin | Light touch, low-frequency vibration | Rapid |
| Pacinian (lamellated) corpuscle | Deep reticular dermis and hypodermis; also joints and viscera | Deep pressure, high-frequency vibration | Very rapid |
| Ruffini corpuscle | Dermis and joint capsules | Skin stretch, sustained pressure, joint position | Slow |
| Hair follicle endings | Around hair follicles in the dermis | Hair movement | Rapid |
Clinical notes
- Diabetic neuropathy starts in the feet (longest axons): loss of protective sensation leads to painless ulcers; the monofilament and vibration tests check it.
- Leprosy, still seen in Colombia, damages skin nerves and gives anaesthetic skin patches.
- Merkel cell carcinoma: an aggressive neuroendocrine skin cancer of sun-exposed skin in older or immunosuppressed people.
Test yourself
Think of the answer, then tap the question to see it.
Which receptor looks like a sliced onion under the microscope, and what does it sense?
The Pacinian (lamellated) corpuscle, deep in the dermis and hypodermis; it senses vibration and deep pressure and adapts very rapidly.
Where are Meissner corpuscles found?
In the dermal papillae just under the epidermis, most of all in hairless skin such as fingertips, palms, soles and lips.
Which two skin mechanoreceptors adapt slowly?
The Merkel cell–neurite complex (sustained pressure, texture) and the Ruffini corpuscle (stretch).
Which receptors carry pain and temperature from the skin?
Free nerve endings of thin myelinated (A-delta) and unmyelinated (C) fibres.
See it in 3D
The structures of Durgical's 3D anatomy where it is found.
Related
- Skin: epidermis layers, dermis, hypodermis
- Keratinocytes, melanocytes, Langerhans and Merkel cells
- Peripheral nerve: endoneurium, perineurium, epineurium; myelin
- The neuron and synapse
Related conditions
Microorganisms
Educational content on normal microscopic structure and its clinical relevance; no substitute for studying slides or for a health professional's advice.
Sources: 14.1 Sensory Perception (OpenStax (Rice University), 2022); Diabetes and nerve damage: MedlinePlus Medical Encyclopedia (MedlinePlus, US National Library of Medicine, 2026).
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Representative model, for educational purposes only.