Keratinocytes
Keratinocytes
Keratinocytes (pronounced: ker-uh-tin-o-sites) are the primary type of cell found in the epidermis, the outermost layer of the skin. They are named for the protein that they produce, keratin, which provides strength and resilience to the skin and underlying tissues.
Etymology
The term "keratinocyte" is derived from the Greek word "keras," meaning horn, and the suffix "-cyte," which is used in biology to denote a cell. Thus, "keratinocyte" can be roughly translated to mean "horn cell," a reference to the tough, horn-like nature of the keratin protein that these cells produce.
Function
Keratinocytes are responsible for the production of keratin, a type of fibrous protein that provides structural support to the skin, hair, and nails. They also play a crucial role in the body's immune response, as they can recognize and respond to various pathogens and inflammatory signals.
Related Terms
- Epidermis: The outermost layer of the skin, where keratinocytes are primarily found.
- Keratin: The protein produced by keratinocytes, which provides strength and resilience to the skin and underlying tissues.
- Stratum corneum: The outermost layer of the epidermis, composed primarily of dead keratinocytes.
- Melanocyte: A type of cell found in the epidermis that produces the pigment melanin, which gives color to the skin, hair, and eyes.
See Also
External links
- Medical encyclopedia article on Keratinocytes
- Wikipedia's article - Keratinocytes
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