Labeled Diagram Of The Skin

Motion picture of the Skin

Human Anatomy

Anatomical Structures of Human Skin

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The skin is the largest organ of the body, with a total area of about 20 foursquare feet. The peel protects united states from microbes and the elements, helps regulate body temperature, and permits the sensations of bear on, heat, and common cold.

Skin has 3 layers:

The epidermis, the outermost layer of pare, provides a waterproof bulwark and creates our skin tone.
The dermis, beneath the epidermis, contains tough connective tissue, hair follicles, and sweat glands.
The deeper subcutaneous tissue (hypodermis) is made of fat and connective tissue.

The pare'southward color is created past special cells called melanocytes, which produce the paint melanin. Melanocytes are located in the epidermis.

Skin Conditions

Rash: Near any alter in the skin's advent can be called a rash. Virtually rashes are from simple pare irritation; others result from medical atmospheric condition.
Dermatitis: A general term for inflammation of the peel. Atopic dermatitis (a blazon of eczema) is the nearly common form.
Eczema: Skin inflammation (dermatitis) causing an itchy rash. Almost often, information technology's due to an overactive immune arrangement.
Psoriasis: An autoimmune status that can cause a variety of skin rashes. Silver, scaly plaques on the skin are the most mutual form.
Dandruff: A scaly status of the scalp may be acquired by seborrheic dermatitis, psoriasis, or eczema.
Acne: The near common skin condition, acne affects over 85% of people at some time in life.
Cellulitis: Inflammation of the dermis and subcutaneous tissues, usually due to an infection. A cerise, warm, ofttimes painful skin rash more often than not results.
Skin abscess (eddy or furuncle): A localized pare infection creates a collection of pus under the skin. Some abscesses must be opened and drained by a physician in order to be cured.
Rosacea: A chronic pare condition causing a reddish rash on the confront. Rosacea may await like acne, and is poorly understood.
Warts: A virus infects the peel and causes the peel to grow excessively, creating a wart. Warts may be treated at habitation with chemicals, duct tape, or freezing, or removed by a physician.
Melanoma: The most dangerous type of pare cancer, melanoma results from sun damage and other causes. A skin biopsy can identify melanoma.
Basal cell carcinoma: The almost common type of peel cancer. Basal prison cell carcinoma is less dangerous than melanoma because it grows and spreads more slowly.
Seborrheic keratosis: A benign, ofttimes itchy growth that appears like a "stuck-on" wart. Seborrheic keratoses may be removed by a physician, if bothersome.
Actinic keratosis: A crusty or scaly bump that forms on sunday-exposed skin. Actinic keratoses tin can sometimes progress to cancer.
Squamous cell carcinoma: A common class of skin cancer, squamous cell carcinoma may begin as an ulcer that won't heal, or an abnormal growth. It commonly develops in sunday-exposed areas.
Herpes: The herpes viruses HSV-ane and HSV-2 tin can cause periodic blisters or skin irritation effectually the lips or the genitals.
Hives: Raised, red, itchy patches on the peel that arise suddenly. Hives usually outcome from an allergic reaction.
Tinea versicolor: A benign fungal skin infection creates pale areas of low pigmentation on the skin.
Viral exantham: Many viral infections can crusade a cerise rash affecting large areas of the skin. This is especially mutual in children.
Shingles (herpes zoster): Caused past the chickenpox virus, shingles is a painful rash on 1 side of the body. A new adult vaccine can preclude shingles in most people.
Scabies: Tiny mites that burrow into the pare cause scabies. An intensely itchy rash in the webs of fingers, wrists, elbows, and buttocks is typical of scabies.
Ringworm: A fungal pare infection (also called tinea). The characteristic rings information technology creates are not due to worms.

Pare Tests

Skin biopsy: A piece of skin is removed and examined under a microscope to identify a skin status.
Pare testing (allergy testing): Extracts of common substances (such as pollen) are applied to the skin, and any allergic reactions are observed.
Tuberculosis skin test (purified protein derivative or PPD): Proteins from the tuberculosis (TB) leaner are injected under the skin. In someone who's had TB, the skin becomes firm.

Skin Treatments

Corticosteroids (steroids): Medicines that reduce immune system activity may improve dermatitis. Topical steroids are most often used.
Antibiotics: Medicines that can impale the bacteria causing cellulitis and other skin infections.
Antiviral drugs: Medicines can suppress the activeness of the canker virus, reducing symptoms.
Antifungal drugs: Topical creams can cure well-nigh fungal skin infections. Occasionally, oral medicines may be needed.
Antihistamines: Oral or topical medicines tin block histamine, a substance that causes itching.
Skin surgery: Most skin cancers must exist removed by surgery.
Allowed modulators: Various drugs can modify the activity of the immune organisation, improving psoriasis or other forms of dermatitis.
Pare moisturizers (emollients): Dry skin is more likely to get irritated and itchy. Moisturizers tin reduce symptoms of many skin atmospheric condition.