Strata
Strata (medicine)
Strata (pronounced: stra-tuh) is a term used in the field of medicine to refer to a layer or a series of layers of cells or tissues in a particular organ or body part. The term is derived from the Latin word 'stratum', meaning 'a spread for lying or sitting on, coverlet, blanket; a bed, couch, layer, stratum'.
Etymology
The term 'strata' is the plural form of 'stratum', which is derived from the Latin word 'stratum'. The word 'stratum' is a noun in Latin, which means 'a spread for lying or sitting on, coverlet, blanket; a bed, couch, layer, stratum'. In the context of medicine, 'strata' refers to the layers of cells or tissues in an organ or body part.
Related Terms
- Stratum Basale: This is the deepest layer of the five layers of the epidermis, the outer covering of skin in mammals.
- Stratum Corneum: The outermost layer of the epidermis, which consists of dead cells and is responsible for the skin's barrier function.
- Stratum Granulosum: A thin layer of cells in the epidermis. Keratinocytes migrating from the underlying stratum spinosum become known as granular cells in this layer.
- Stratum Lucidum: This is a thin, clear layer of dead skin cells in the epidermis named for its translucent appearance under a microscope. It is readily visible by light microscopy only in areas of thick skin, which are found on the palms of the hands and the soles of the feet.
- Stratum Spinosum: This layer of the epidermis contains keratinocytes that are undergoing a great deal of metabolic activity.
External links
- Medical encyclopedia article on Strata
- Wikipedia's article - Strata
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