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35 Cards in this Set
- Front
- Back
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The skin is composed of 2 parts
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the epidermis and the dermis
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what is the heaviest organ of the body
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skin
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how can skin be classified
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based on its thickness can be classified as thin or thick
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List the 5 layers on the epidermis from basal to superficial
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Stratum Basale
Stratum Spinosum Stratum Granulosum Stratum Lucidum Stratum Corneum |
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what layer of the epidermis is only one cell layer thick?
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stratum basale
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Langerhans are a unique cell type of what layer
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Stratum spinosum
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Psoriasis can affect which cell layers
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strata basale and spinosum
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keratohyalin granules are found in what strata
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stratum granulosum
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what is the most superficial layer in which nuclei are present in the epidermis
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stratum granulosum
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what layer is clear and homogenous, usually not seen
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stratum lucidum
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what is the outer most epidermal layer
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stratum corneum
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what cellular component in the epidermis is pale-staining with long, cytoplasmic projections and found in the stratum basale?
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melanocytes
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what are melanocytes derived from
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neural crest cells
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where does melanin tend to accumulate
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in the supranuclear region of keratinocytes
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what cell type minimizes tissue damage from UV radiation
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melanocytes
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Where are langerhan cells mainly found
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in the stratum spinosum
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which cellular component in the epidermis is involved in phagocytosis
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langerhan cells
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where are merkel cells found
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stratum basale
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would you see Merkel's cells in thin or thick skin?
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thick skin
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Are melanocytes found in thin or thick skin in humans?
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thin skin
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Which strata is prominent in thick skin?
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stratum corneum
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where on the body would you find thick skin
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the palms of hands and soles of feet
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What type of skin (thick or thin) contains hair follicles and sebaceous glands
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thin skin
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Interdigitations between the dermis and epidermis are best developed in what areas
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on the palms of hands and soles of feet -- areas exposed to shearing stress
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what muscles causes the hair to stand up (goose bumps)
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erector pili muscle
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what type of nerve can be found deep in the dermis
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Pacinian Corpuscles
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the pacinian corpuscle functions as...
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a pressure receptor
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Meissner's corpuscles are concentrated where
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confined to dermal papillae
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Meisnner's Corpuscles are most numerous where in the body
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in the hands and feet, also where fine touch and discrimination is important like the eyelids and fingertips especially
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An accumulation of fluid at the dermo-epidermal junction is known as
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a blister
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when the epidermis thickens as a result of the disruption by infiltration of leukocytes this is called..
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dermatitis
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acne results as an obstruction to what type of gland
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sebaceous gland
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what type of gland produces oily secretions on the skin
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sebaceous glands
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what kind of glands are associated with hairs developed during puberty
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apocrine sweat glands
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which glands produce viscid milky secretions in response to external stimuli such as fear or sexual excitement
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apocrine sweat glands
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