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66 Cards in this Set
- Front
- Back
the skin and the accessory structures- hair, nails, sweat glands, and sebaceous glands
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Integumentary system
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Skin and related structures are considered a. . . .
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body organ
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primary function of skin
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protection
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functions of skin
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production of vitamin D; excretion of sweat, urea, and lactic acid; expression of emotion; repair of its own surface wonds
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Three layers of skin:
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epidermis, dermis, subcutaneous layer (hypodermis)
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thin, outermost layer of skin and composed of stratified squamous epithelium
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epidermis
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avascular
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it has no direct blood supply
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stratum germinativum
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-deepest aspect of epidermis and close to blood supply
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Active cell generation takes place where in the epidermis?
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the stratum germinativum
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outermost layer of the epidermis
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stratum corneum
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function of stratum corneum?
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protective barrier and regulates water loss
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the process of cell regeneration takes how long?
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30 days
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Hair and nails are composed mainly of?
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keratin
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Where are melanocytes located and its function?
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-in the basal cell layer of the epidermis
-secrete melanin (pigment for skin) |
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the layer of skin that is made up of highly vascular connective tissue?
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Dermis
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Function of the Dermis
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-regulation of body temp and BP
-dermal blood nourishes epidermis -dermal connective tissue provides support for outer layer |
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this layer is not actually skin tissue
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subcutaneous layer
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Function of the hypodermis layer
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-support structure for the dermis and epidermis
-retain heat, provide protective cushion, and provide calories |
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Hair is formed from. . .
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epidermal cells in the dermis
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nails are made up of. . .
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epidermal cells
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defn of paronychium
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skin tissue adjacent to the nail
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which sweat gland is the most widespread on the body?
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Eccrine Sweat Glands
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Which sweat gland is found in its greatest numbers on the palms of hands, soles of feet, and forehead?
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Eccrine Sweat Glands
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Where are the Apocrine sweat glands found?
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axillae, nipples, areolae, anogenital area, eyelids, and external ears
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Decomposition of what sweat produces body odor?
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apocrine
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this gland secretes a lipid-rich substance which keeps the skin and hair from drying out
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Sebaceous glands
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What gland has the greatest distribution on the face and scalp?
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Sebaceous glands
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What gland secretion is stimulated by sex hormone activity?
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Sebum secretion
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What nationalities of people have fewer apocrine glands causing them to perspire less and produce less BO?
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-Native Americans
-Alaskan Natives -Pacific Islanders -Asian Americans |
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What is the most commonly reported symptom of skin disease?
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Pruritis
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cyanosis
(in light skin) |
Grayish blue tone, especially in nail beds, earlobes, lips, mucous membranes, palms, and soles of feet
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cyanosis
(in dark skin) |
Ashen-gray color most easily seen in the conjunctiva of the eye, oral mucous membranes, and nail beds
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Ecchymosis (bruise)
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Dark red, purple, yellow, or green color, depending on age of bruise
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Erythema
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-Reddish tone in light skin
-deeper brown or purple in dark skin -increased temp secondary to inflammation |
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Jaundice
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yellowish color of skin, sclera of eyes, fingernails, palms of hands, and oral mucosa
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Pallor
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Pale skin color that may appear while in light skin people and maybe a ashen gray in dark skinned people
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Petechiae
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Lesions appear as small, reddish purple pinpoints
-may be difficult to see on dark skinned people |
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Rash
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may be visualized as well as felt with light palpation
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Scar
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Narrow scar line; frequently has keloid development, resulting in a thickened, raised scar
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Pigmented nevi
(moles) |
-most adults have 10-40
-most common above the waist on sun-exposed body surfaces -typically less than 5mm in size |
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Freckles
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-most common locations are on face, arms, and back
-small, flat, hyperpigmented macules |
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Patch
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-an area of darker skin pigmentation
-birthmarks |
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striae
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silver or pink "stretch marks" secondary to weight gain or pregnancy
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Vitiligo
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-acquired condition
-associated with development of unpigmented patch or patches -more common in dark-skinned races |
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an increase in thickness of skin is most commonly seen in what sort of patient?
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Diabetic
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Excessively thin skin may be seen in patients with what condition?
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hyperthyroidism
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Hirsutism
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hair growth in women with an increase of hair on the face, body, and pubic area
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koilonychia
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-spoon nail
-a thin, depressed nail with lateral edges turned upward |
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leukonyhia
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appears as white spots on the nail plate
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clubbing is present in what sort of people?
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long-term smokers
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What lesion characteristics need to be documented during examination?
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-location
-distribution -color -pattern -edges -size characteristics |
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Thinning or brittleness of the nail may be secondary to what?
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-poor peripheral circulation
-inadequate nutrition |
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Pitting of the nail is commonly associated with what disorder?
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Psoriasis
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Examples of Papule?
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-Wart (verruca)
-elevated moles -lichen planus -skin tag |
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Examples of Patch?
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Vitiligo
port wine stains mongolian spots cafe-au-lait spots |
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Plaque
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Psoriasis
Eczema |
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Wheal
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insect bites
urticaria allergic reaction lupus erythematosus |
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Nodule
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lipomas
melanoma hemangioma neurofibroma |
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Tumor
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neoplasms
lipoma hemangoima |
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vesicle
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vericella (chickenpox)
herpes zoster (shingles) impetigo acute eczma |
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bulla
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blister
pempigus vulgaris lupus erythematosus impetigo |
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pustule
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imjpetigo
acne folliculitis herpes simplex |
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cyst
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sebaceous cyst
cystic acne |
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Fissure
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athletes foot
cracks at corner of mouth eczema |
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Stasis Dermatitis
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Inflammation of the skin on lower legs
Most commonly seen in older adults May be caused by chronic edema or poor peripheral circulation |
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What is the most common form os skin cancer
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Basal Cell Carcinoma
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