🙌Your skin is your body's first line of defense, protecting against infection and maintaining balance.
🌈Skin color is determined by the amount of melanin in your melanocytes, not the number of melanocytes.
💪The epidermis constantly regenerates, with new cells replacing old ones every 4 to 6 weeks.
🌞Sun exposure can lead to skin damage, including premature aging and skin cancer.
🖌️Tattoo needles must penetrate the dermis to create permanent tattoos, which can be painful and cause bleeding.
How does the skin protect against infection?
—The skin acts as a physical barrier, preventing microbes from entering the body. It also produces antimicrobial substances and houses immune cells that help fight off infections.
Why do people have different skin colors?
—Skin color is primarily determined by the amount of melanin produced by melanocytes. Factors such as genetics and sun exposure also play a role.
How often does the epidermis regenerate?
—The epidermis undergoes constant cell turnover, with new cells replacing old ones every 4 to 6 weeks.
What are the potential dangers of sun exposure?
—Sun exposure can lead to skin damage, including sunburns, premature aging, and an increased risk of skin cancer.
Why is getting a tattoo painful?
—Tattoo needles penetrate the dermis, which contains nerve endings, leading to pain and potential bleeding.
00:00Your skin is the largest organ in your body, protecting against infection, regulating temperature, and sensing the outside world.
04:24The epidermis is the outermost layer of the skin and is made up of stratified squamous epithelial tissue.
06:32Sun exposure can damage the skin and increase the risk of skin cancer, so wearing sunscreen is important.
07:01The dermis is where most of the work of the skin is done, including housing nerve fibers, blood vessels, and hair follicles.
08:14Tattoo needles must penetrate the dermis to create permanent tattoos, but this can cause pain and bleeding.
