U3: The Integumentary System

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36 Terms

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Integumentary System

the organ system that provides protection to the outer body

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Epidermis

the outermost layer of the skin

<p>the outermost layer of the skin</p>
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Dermis

the second layer of the skin composed of elastic connective tissue, blood vessels, lymph vessels, nerves, involuntary muscle, hair follicles, sweat, and oil glands

<p>the second layer of the skin composed of elastic connective tissue, blood vessels, lymph vessels, nerves, involuntary muscle, hair follicles, sweat, and oil glands</p>
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Hypodermis

also known as the subcutaneous fascia is the innermost layer of the skin consisting of connective tissue and adipose (fatty tissue)

<p>also known as the subcutaneous fascia is the innermost layer of the skin consisting of connective tissue and adipose (fatty tissue)</p>
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Sebaceous Glands

oil glands

<p>oil glands</p>
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Sudoriferous Glands

sweat glands

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Macules

flat spots on the skin such as freckles

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Papules

small, firm skin elevation caused by inflammation, fluid accumulation, or hypertrophy of tissue

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Vesicles

a small abnormal elevation of the outer layer of skin enclosing a watery liquid

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Pustules

a small circumscribed elevation of the skin containing pus and having an inflamed base

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Crusts

an encrusting deposit of serum, cellular debris, and bacteria present over or about lesions in some skin diseases

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Wheals

a suddenly formed elevation of the skin surface with associated burning or itching

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Ulcer

a break in the skin or mucous membranes with loss of surface tissue; may extend into the dermis and cause bleeding and/or scarring.

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Keratinization

the process in which the cytoplasm of the outermost cells of the mammalian epidermis is replaced by keratin

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Inflammatory Response

A normal response to injury characterized by swelling, warmth, and pain, aimed at increasing nutrients and oxygen supply for healing.

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Acne

A disease linked to the sebaceous glands, where sebum can occlude the duct opening leading to pimple development, affecting an estimated 80 percent of people at some point in their lives.

<p>A disease linked to the sebaceous glands, where sebum can occlude the duct opening leading to pimple development, affecting an estimated 80 percent of people at some point in their lives.</p>
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Eczema

A skin condition characterized by dry, scaly, itchy, and recurring rashes, which can lead to rough, dark, leathery patches of skin over time.

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Psoriasis

A skin condition that may be misunderstood due to a lack of knowledge about its disease process.

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Skin Cancer

The most common form of cancer in the United States, with common types including squamous cell, basal cell, and melanoma.

<p>The most common form of cancer in the United States, with common types including squamous cell, basal cell, and melanoma.</p>
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Melanoma

A type of skin cancer that forms in the melanocytes and holds the greatest life-threatening potential among skin cancer types.

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Aging Integumentary System

Visible changes in the skin that affect homeostasis and appearance, including thinning skin and decreased elasticity.

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Epidermal Layers

The outer layers of skin that show signs of aging, such as larger, fewer, and less elastic cells.

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Fatty Layer

The layer under the skin that thins with age, leading to more prominent wrinkles and decreased capacity to endure temperature changes.

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Capillary Blood Supply

Blood vessels supplying the skin that shrink with age, decreasing support for sweat glands.

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Sweat Glands

Glands that help regulate body temperature, which become less effective with aging, increasing the risk of heatstroke.

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Nerve Endings

Sensory structures in the skin that decrease with age, leading to reduced sensitivity to pain and increased injury risk.

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Healing Process

The biological process that slows with age due to diminished blood supply and nutrient delivery for tissue repair.

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Melanocyte Production

The process that slows with age, leaving skin more vulnerable to ultraviolet radiation.

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Vitamin D Synthesis

The skin's ability to produce Vitamin D, which decreases with age, placing individuals at risk for skeletal injury and depression.

<p>The skin's ability to produce Vitamin D, which decreases with age, placing individuals at risk for skeletal injury and depression.</p>
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Homeostasis

The body's ability to maintain stable internal conditions, which can be disrupted by aging skin.

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Skin Integrity

The overall health and condition of the skin, which deteriorates with age.

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Injury

Any damage to the skin that triggers the inflammatory response and healing process.

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Environmental Irritants

External factors that, combined with genetics, may predispose individuals to specific skin conditions.

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Chronic Inflammation

A prolonged inflammatory response that can lead to skin conditions like eczema.

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Skin Disease

Any condition affecting the skin, including acne, eczema, psoriasis, and skin cancer.

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Pain Response

The body's reaction to injury, which can diminish with age, increasing injury risk.