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What are the functions of the skin?

What are the functions of the skin?. Derivatives of the Skin. Sweat Glands . ~3 million of them throughout the body! Per person! . Eccrine Sweat Glands. Releases into skin surface Most abundant sweat glands Also on soles, palms, and forehead Secretory part in dermis.

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What are the functions of the skin?

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  1. What are the functions of the skin?

  2. Derivatives of the Skin

  3. Sweat Glands • ~3 million of them throughout the body! • Per person!

  4. Eccrine Sweat Glands • Releases into skin surface • Most abundant sweat glands • Also on soles, palms, and forehead • Secretory part in dermis

  5. What makes you sweat

  6. Apocrine Sweat Glands • Empty into hair follicles • Larger then eccrine • Axillary and anogenital areas • Fatty and protein substances • Milky and Yellowish color… oooo! • Released during pain, stress, and sex?

  7. Ceruminous Glands • Release earwax!

  8. Mammary Glands • Secrete milk! • We’ll talk about them a little bit later

  9. Sebaceous Glands • Oil glands – all over body • Produce sebum • Release into hair follicle • Maybe a pore • Hormones stimulate

  10. Hair and Hair Follicles • What is the point? • Some people get a lot… lucky!

  11. Some people don’t get any 

  12. Hair • Growths of the epidermis variously distributed over the body. • Dead keratinized cells • DIVIDED INTO TWO MAJOR DIVISIONS: • 1. THE ROOT • 2. THE SHAFT

  13. THE ROOT • Portion just below the surface that penetrates into the dermis. • Surrounding the root is a hair follicle • At the base of each follicle is an enlarged structure called a bulb.

  14. Hair Follicle • Each follicle gets • Arrectorpilli – smooth muscle • Nerves! – root hair plexus • Hair papilla – capillaries!

  15. NAILS • Hard keratinized cells of the epidermis • 3 parts: • 1. Nail body- portion that is visible • 2. Free edge-Any part that may project beyond the distal end of the digit. • 3. Nail root-Hidden in proximal nail groove

  16. Structure of a hair follice

  17. Hair Growth

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