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(734) 222-9631

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  • Dermatology Education Library >
  • Anatomy of the Skin

Skin. It is the largest organ on the human body. It creates a protective layer against heat, light, the environment, injury and infection. It helps regulate the body's temperature; stores water, fat and Vitamin D; prevents entry of bacteria; and acts as a sensory organ. On average, an adult has between 18 and 20-square feet of skin, which roughly weighs six pounds.

There are three layers to skin:

Epidermis. This is the outermost layer that sloughs off dead skin cells and acts as a protective barrier against foreign bodies, infections and the sun. The epidermis also contains the cells (melanocytes), which are responsible for skin pigmentation.

Dermis. The middle layer of skin, the dermis houses hair follicles, sebaceous (oil) glands, sweat glands, capillaries (small blood vessels) and lymph vessels. It is held together by a protein called collagen. Sweat glands are part of the body's cooling system. The dermis also contains touch and pain receptors.

Subcutaneous. This is the deepest layer of skin containing larger blood vessels and nerves. It is made up of a network of collagen and fat cells and plays an important role in the manufacture of Vitamin D, protecting against injury and conserving body heat.

  • Hair Loss in Women
    Category: Anatomy of the Skin

    OVERVIEW Hair loss in women occurs for a variety of reasons. Noticeable hair loss occurs when there is greater than the usual loss of hair that outpaces new hair growth. When men have hair loss, it’s typically associated with balding, but women usually have hair loss without going bald. Signs and Symptoms

    Read more
  • Forehead Wrinkles
    Category: Anatomy of the Skin

    OVERVIEW Forehead wrinkles are often a sign of stress, unhappiness, and worry. They can also result from poor sleep habits or an underlying health condition such as allergies or high blood pressure. Whatever their cause, forehead wrinkles make you look older than you are. But there is good news: they're

    Read more
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  • Dermatology Education Library
    • What is a Dermatologist?
    • Anatomy of the Skin
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  • Dermatology Education Library
    • Skin Conditions
    • Skin Growths
    • Precancers & Skin Cancers
    • Hair Loss
    • Infections & Infestations
    • Skin Care
    • Cosmetics

Office Hours
Monday: 8:00 AM - 5:00 PM
Tuesday: 8:00 AM - 5:00 PM
Wednesday: 8:00 AM - 5:00 PM
Thursday: 8:00 AM - 5:00 PM
Friday: Closed
Saturday: Closed
Sunday: Closed

After Hours
For Non-Emergency questions, use the patient portal or use the Contact Us form

In case of Emergency, call St Joseph Mercy Hospital Operators at
(734) 712-3456 and have Dr. Fivenson paged

David Fivenson MD
(734) 222-9630
(734) 222-9631

3200 W Liberty Road Suite C5 

                                                                                           Ann Arbor,MI 48103

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