The Integumentary System: Understanding Skin Physiology
Science ABC
Apr 8, 2024 10:40
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Chapters
What is the integumentary system and how does your skin work? In this video, we explain skin physiology in simple words — from why skin is the largest organ in your body (2 square meters, 16% of body weight) to the three layers (epidermis, dermis, hypodermis), how melanin protects against UV rays, why professional tattoos are permanent but DIY ones aren't, and how your skin produces vitamin D from sunlight.
Whether you're a biology student preparing for an anatomy exam, curious about why tattoo ink stays forever, or wondering why people have different skin colors, this beginner-friendly animated explainer covers the entire integumentary system.
CHAPTERS:
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KEY TOPICS COVERED:
• The integumentary system: skin, hair, nails, and glands
• Three layers of skin: epidermis, dermis, and hypodermis
• Keratinocytes and keratin: what makes skin tough
• Melanin: how melanocytes determine skin color and protect against UV
• Why professional tattoos are permanent (macrophages in the dermis)
• How skin produces vitamin D from sunlight (UV + cholesterol → D3)
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REFERENCES:
https://openstax.org/books/anatomy-and-physiology-2e/pages/5-3-functions-of-the-integumentary-system
https://www.ncbi.nlm.nih.gov/books/NBK554386/
Voice Over: John Staughton (https://www.fiverr.com/jswildwood)
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Science & Technology
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