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How do collagen and elastic fibers give the dermis strength and flexibility?
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skin disease
Visible alterations in the texture of the skin, such as rashes and hives, can be indicative of serious disease. For example, one of the first signs of Lyme disease is a circular rash in a bull's-eye pattern on the skin.
The dermis derives its structural integrity and functional properties from a complex network of fibers within its connective tissue.12
- Collagen fibers: As the primary structural protein in the skin, collagen provides the dermis with essential tensile strength, firmness, and pliability. These fibers are organized into bundles that are highly resistant to stretching, allowing the skin to withstand tension and maintain its overall integrity.345
- Elastic fibers: Composed primarily of the protein elastin, elastic fibers provide the skin with its characteristic flexibility. This network of extendable fibers keeps the skin taut and allows it to stretch in response to movement or pressure, subsequently restoring the skin to its original shape once the tension is released.61
Together, these fibers—supported by materials like glycosaminoglycans that maintain hydration and turgidity—ensure the skin remains both durable and resilient.1