🩹🧬 Scar tissue forms when specialized cells called fibroblasts quickly deposit dense bundles of collagen to seal an injury.The process prioritizes the restoration of the skin's protective barrier against #microbes over the original structure of healthy skin. Because the resulting dense tissue lacks #hair follicles and sweat glands it remains a permanent physical record of the body's rapid repair mechanism. https://www.popsci.com/science/why-scars-never-disappear/#science #biology #humanbody #health #dermatology #evolution #learning #nature
