Functions of skin


1. Barrier
• Normal flora of the skin: stap. Epidermis as this prevents the growth of foreign organisms

• Respiratory Mucosa and Genital tract are areas where body comes in contact with organisms and so flora are present in these areas as well.

These floras throughout the area can be lost due to
• Burns
• Antibiotics

2. Immunoregulatory System
• T cells require markers and then go to SALT (skin associated lymphoid tissues)
• Antigen representing cells of the skin are caller Langerhan cells

3. Thermoregulation
• Sweating occurs to decrease the body temperature
• The centre of regulation is in the hypothalamus; this controls the blood supply of the skin, and helps in maintaining body temperature.
• Heat stroke: all of a sudden there is a loss in controlling thermoregulation in the body.

4. Excretory Function
• Sweat contains Na, Cl, water, urease, and lactate
• Drugs: rifampin, and antifungals (griseofulvin and ketoconazole)


A. vitamin D which is activated through sunlight.
• Cholecalciferol in the skin is converted into hydroxycalciferol. Then in the kidney this is converted into 1,25 dihydroxycholecalciferol. This product prevents calcium secretion in the kidney.
• Vitamin D is like a hormone and so the skin can also be said to have endocrine functions.

B. Vitamin E (tocophenols)
• Antiaging
• Anti oxidant
• Carotenes are inactive vitamin A that we eat. This is converted into vitamin A in the body.
• This helps in epithelization and keratinization.

*Vitamin A needs to be eaten to be present. Vitamind D and E the body already has and so gets activated. ie- through sunlight.

6. Melanin
• Prevents the skin from cancer.
• There are many types of skin. There are Negroids, Cockosoids (wheatish complexion and black hair), Ostreoloids, and Mongoloids.
• Races that have more melanin are prevented from cancer as they do not allow sunlight to scatter and cause damage to skin. Lighter skinned races are more likely to have skin damage, as there are more chances of error in re-building the dimers of the skin
• Sunlight has x rays, gamma rays and UV light. There are 3 types of UV radiation, A, B, and C. These UV radiations are damaging because they cause DNA mutations. The level of damage depends on sunlight, the amount of skin exposed and how much melanin is present.
• Wavelengths for UV light are the following:
UVA- 320-400- least damaging (crosses glass)
UVB- 290-320- cannot cross glass window panes
UVC 200-290- most damaging (does not cross Ozone layer)

7. Production of Cebum
• This is what leads to oily skin. This is because there are sebaceous glands in the skin which produce oil. This keeps the skin moisturized and also has antiseptic properties.
• Cebum is activated at puberty and at first year of life.
• It is activated at first year of life because it is stimulated by androgens, and these androgens are present from the mother.
• Cebum usually prevents one from infections, hence children are more susceptible as they do not start producing it until puberty.

• To look good
• Identification of races
• Arsenic in hair is used in forensics for identification

• Fine motor skills
• Acral (distal) parts are protective
We can live without our nails so they are not that functionally important.


  1. Heya i am for the first time here. I came across this
    board and I in finding It truly helpful & it helped me out much.

    I'm hoping to present one thing again and aid others like you aided me.

    Review my website Mh3 Nject

  2. I was curious if you ever thought of changing the structure of your
    website? Its very well written; I love what youve got to say.
    But maybe you could a little more in the way of content so people could connect with it
    better. Youve got an awful lot of text for only having 1 or
    two pictures. Maybe you could space it out better?

    Also visit my web blog :: Lean Muscle formula

  3. Good site you have got here.. It's difficult to find excellent writing like yours these days. I seriously appreciate people like you! Take care!!

    Check out my web blog - Cambogia Extract

  4. Link exchange is nothing else but it is simply placing the other person's webpage link on your page at suitable place and other person will also do similar in support of you.

    my blog ... Test Force Extreme

  5. I would like to thank you for the efforts you've put in writing this blog. I really hope to view the same high-grade blog posts from you in the future as well. In truth, your creative writing abilities has encouraged me to get my very own site now ;)

    My webpage ... Saphire Ecigs

  6. This design is wicked! You definitely know how to keep a reader amused.
    Between your wit and your videos, I was almost moved to start my own blog (well,
    almost...HaHa!) Excellent job. I really enjoyed what you had to say, and more than that, how you presented
    it. Too cool!

    Also visit my homepage best supplements for muscle growth

  7. Hey I know this is off topic but I was wondering if you knew of any widgets I
    could add to my blog that automatically tweet my newest twitter updates.
    I've been looking for a plug-in like this for quite some time and was hoping maybe you would have some experience with something like this. Please let me know if you run into anything. I truly enjoy reading your blog and I look forward to your new updates.

    Also visit my webpage Vapoer e

  8. Great article, just what I was looking for.

    Feel free to surf to my homepage :: Grow XL Review

  9. Really when someone doesn't know then its up to other viewers that they will help, so here it takes place.

    Also visit my web blog Buy home income kiit

  10. Have you ever thought about creating an e-book or guest authoring on other sites?

    I have a blog based upon on the same subjects you discuss and
    would love to have you share some stories/information.
    I know my subscribers would appreciate your work.

    If you are even remotely interested, feel free to shoot me an e mail.

    Here is my site nuva genic

  11. Fantastic beat ! I wish to apprentice at
    the same time as you amend your web site, how could i subscribe for
    a blog website? The account helped me a acceptable deal.
    I have been tiny bit familiar of this your broadcast provided
    vibrant transparent concept

    Here is my homepage: Lift serum pro

  12. I just like the valuable information you supply to your articles.
    I'll bookmark your blog and check again here regularly. I'm quite sure I will be
    informed a lot of new stuff right right here! Best of luck for the following!

    Here is my website - Slim XS Diets

  13. Here we present to introduce to all visitors in this great blog. and thank you for allowing me .

    cara menggugurkan kandungan
    obat aborsi
    tanda tanda kehamilan

  14. This is a very good article material and it is very useful for us all. thank you . cara menggugurkan kandungan

  15. Mudahnya Merawat Karpet Agar Lebih Tahan Lama

    Mudahnya Merawat Karpet Agar Lebih Tahan Lama - Kebiasaan karpet lantai dilakukan oleh hampir semua orang. karpet masjid Motif warna-warni membuatnya lebih mudah bagi kita untuk memilih yang mana yang sesuai dengan ruangan. mudah merawat karpet Di balik penampilannya yang elegan ternyata karpetnya sedikit kotor. Penyebab pertama adalah, karpet jarang dibersihkan Ukurannya sering membuat kita malas untuk memperhatikan kebersihan karpet masjid. tips merawat karpet Jadi jangan ragu, ini adalah tips nya: karpet masjid yang murah Bersihkan karpet setiap dua hari sekali dengan penyedot debu. Penggunaan vacuum cleaner ini memungkinkan pembersihan karpet. karpet masjid yang termurah Ubah posisi karpet secara rutin setiap bulan. Dengan mencari warna, karpet tidak akan pudar. mencari karpet masjid yang murah Jika Anda memiliki produk pembersih khusus, Anda juga bisa menggunakan karpet. karpet masjid yang terbaik Kemudian tuangkan air bersih di permukaan karpet untuk melembabkannya. menjual karpet yang murah dan bagus Bilas lagi dengan air bersih. tips karpet masjid berkualitas Pengeringan karpet
    Setelah fase pencucian selesai, Anda dapat membawa karpet keluar dari ruangan. Jangan mencoba mengeringkan karpet di bawah sinar matahari karena dapat merusak material. Pengeringan cukup untuk dilakukan di teras atau di bawah naungan pohon.


  16. شركة تنظيف بالدمام
    شركة تنظيف منازل بالاحساءشركة تنظيف مجالس بالاحساء شركة تنظيف مجالس بالاحساء
    شركة مكافحة حشرات بالاحساء شركة مكافحة حشرات بالاحساء