Scab
Scab
Scab (/skæb/), from the Old English sceabb, is a term used in medicine to refer to a crust that forms over a wound during the healing process.
Pronunciation
- IPA: /skæb/
Etymology
The term scab originates from the Old English sceabb, which means "crust" or "shell". It has been used in the English language since the late 14th century to refer to the crust that forms over a wound.
Definition
In medical terms, a scab is a dry, rough protective crust that forms over a cut, scrape, or wound to protect it from infection and to help the healing process. It is part of the body's natural repair mechanism. The scab eventually falls off, revealing new skin underneath.
Related Terms
- Epidermis: The outermost layer of the skin, where a scab forms.
- Dermis: The layer of skin beneath the epidermis, which can be exposed if a wound is deep enough.
- Granulation tissue: New connective tissue and microscopic blood vessels that form on the surfaces of a wound during the healing process.
- Inflammation: A part of the complex biological response of body tissues to harmful stimuli, such as pathogens, damaged cells, or irritants.
- Platelet: A type of blood cell that helps the body form clots to stop bleeding.
- Fibrin: A protein involved in the clotting of blood, it forms a mesh that aids in the formation of a scab.
- Coagulation: The process by which blood changes from a liquid to a gel, forming a blood clot.
See Also
External links
- Medical encyclopedia article on Scab
- Wikipedia's article - Scab
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