Question

what us epidermis ? and it's function. tell in 50 to 100 words

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Answer 1

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EPIDERMIS :-(｡◕‿◕｡)➜

The epidermis is the outermost of the three layers that make up the skin, the inner layers being the dermis and hypodermis.[1] The epidermis layer provides a barrier to infection from environmental pathogens[2] and regulates the amount of water released from the body into the atmosphere through transepidermal water loss.[3] The epidermis is composed of multiple layers of flattened cells[4] that overlie a base layer (stratum basale) composed of columnar cells arranged perpendicularly

Explanation:

FUNCTIONS :- (｡◕‿◕｡)➜

• Physical barrier: Epidermal keratinocytes are tightly linked by cell–cell junctions associated to cytoskeletal proteins, giving the epidermis its mechanical strength.[3]

• Chemical barrier: Highly organized lipids, acids, hydrolytic enzymes, and antimicrobial peptides[3] inhibit passage of external chemicals and pathogens into the body.

• Immunologically active barrier: The humoral and cellular constituents of the immune system[3] found in the epidermis actively combat infection.

• Water content of the stratum corneum drops towards the surface, creating hostile conditions for pathogenic microorganism growth.[11]

• An acidic pH (around 5.0) and low amounts of water make the epidermis hostile to many microorganic pathogens.[11]

• Non-pathogenic microorganisms on the surface of the epidermis help defend against pathogens by competing for food, limiting its availability, and producing chemical secretions that inhibit the growth of pathogenic microbiota.[11]

• PermeabilityPsychological stress, through an increase in glucocorticoids, compromises the stratum corneum and thus the barrier function.[21]

• Sudden and large shifts in humidity alter stratum corneum hydration in a way that could allow entry of pathogenic microorganisms.[22]

HOPE THIS HELPS ☺️

Answer 2

Answer:

The epidermis, the outermost layer of skin, provides a waterproof barrier and creates our skin tone. The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.......

hope it's help u..madhu.