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00:01:21 1 Structure
00:02:42 1.1 Epidermis
00:04:04 1.1.1 Components
00:05:25 1.1.2 Layers
00:06:47 1.1.3 Sublayers
00:08:08 1.1.4 Genes and proteins expressed in the epidermis
00:09:29 1.2 Dermis
00:10:51 1.2.1 Papillary region
00:12:12 1.2.2 Reticular region
00:13:34 1.3 Subcutaneous tissue
00:14:55 1.4 Cross-section
00:15:36 2 Development
00:16:16 2.1 Skin color
00:17:38 2.2 Aging
00:18:59 2.2.1 Photoaging
00:20:21 3 Functions
00:21:42 3.1 Skin flora
00:23:03 4 Clinical significance
00:24:25 5 Society and culture
00:25:06 5.1 Hygiene and skin care
00:26:27 5.1.1 Oily skin
00:27:48 6 Permeability
00:29:10 6.1 Nanoparticles
00:30:31 6.2 Increasing permeability
00:31:53 6.3 Applications
00:33:14 6.4 Sunblock and sunscreen
00:34:35 6.5 Diet
00:35:57 7 See also



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Voice name: en-GB-Wavenet-B


"I cannot teach anybody anything, I can only make them think."
- Socrates


SUMMARY
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The human skin is the outer covering of the body and is the largest organ of the integumentary system. The skin has up to seven layers of ectodermal tissue and guards the underlying muscles, bones, ligaments and internal organs. Human skin is similar to most of the other
mammals skin, and it is very similar to pig skin. Though nearly all human skin is covered with hair follicles, it can appear hairless. There are two general types of skin, hairy and glabrous skin (hairless). The adjective cutaneous literally means "of the skin" (from Latin cutis, skin).
Because it interfaces with the environment, skin plays an important immunity role in protecting the body against pathogens and excessive water loss. Its other functions are insulation, temperature regulation, sensation, synthesis of vitamin D, and the protection of vitamin B folates. Severely damaged skin will try to heal by forming scar tissue. This is often discolored and depigmented.
In humans, skin pigmentation varies among populations, and skin type can range from dry to oily. Such skin variety provides a rich and diverse habitat for bacteria that number roughly 1000 species from 19 phyla, present on the human skin.

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