What is stratum corneum?
What is stratum corneum?
The stratum corneum is the outermost layer of the epidermis and marks the final stage of keratinocyte maturation and development. Keratinocytes at the basal layer of the epidermis are proliferative, and as the cells mature up the epidermis, they slowly lose proliferative potential and undergo programmed destruction.
What is the stratum corneum and what is its function?
The stratum corneum (SC), the skin’s outermost layer and interface with the outside world is now well recognized as the barrier that prevents unwanted materials from entering, and excessive loss of water from exiting the body. This review summarizes the major advances in our understanding of this formidable membrane.
Why is it called the stratum corneum?
The stratum corneum is the outermost layer of the epidermis, and is made up of 10 to 30 thin layers of continually shedding, dead keratinocytes. The stratum corneum is also known as the “horny layer,” because its cells are toughened like an animal’s horn.
What is stratum basale function?
Stratum basale, also known as the basal cell layer, is the innermost layer of the epidermis. This layer contains column-shaped basal cells that are constantly dividing and being pushed toward the surface. The stratum basale is also home to melanocytes that produce melanin (the pigment responsible for skin color).
What is stratum lucidum function?
It is usually found in the thick skin of the palm of the hand or soles of the feet. The function of it is to protect the areas most common to damages such as palms of the hand, side fingers and the bottoms of the feet. It is usually an extra layer of skin.
What is the main function of the stratum Granulosum?
The function of the stratum granulosum is to act as a transitional layer where keratinocyte skin cells develop into their final form and die.
What are the main functions of the skin?
Functions of the skin
- Provides a protective barrier against mechanical, thermal and physical injury and hazardous substances.
- Prevents loss of moisture.
- Reduces harmful effects of UV radiation.
- Acts as a sensory organ (touch, detects temperature).
- Helps regulate temperature.
- An immune organ to detect infections etc.
What do Corneocytes do?
Functions. Layers of corneocytes produce high mechanical strength which allows epidermis of the skin to perform its function as a physical, chemical and immunological barrier. Corneocytes are also capable of absorbing and storing small amounts of water to keep the skin hydrated and maintain its flexibility.
What is an epidermal?
Epidermal: Pertaining to the epidermis, the outermost layer of the skin.
What is the function of epidermis?
The epidermis is the top layer of skin in your body. It has many important functions, including protecting your body from the outside world, keeping your skin hydrated, producing new skin cells and determining your skin color.
