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68 Cards in this Set
- Front
- Back
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Outermost portion of the skin
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Epidermis
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The epidermis is subdivided into thin layers called ?
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Strata
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The epidermis is composed entirely of ? and contains no ?
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-Epithelial Cells -Blood Vessels |
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The connective tissue portion of the cutaneous membrane
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Dermis
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The dermis contains ?
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-Blood Vessels -Nerve Endings -Glands |
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The skin consists of what two layers?
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-Epidermis -Dermis |
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Underneath & supporting the dermis is the ?
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Subcutaneous Layer
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Epidermis contains what strata?
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-Stratum Corneum -Stratum Basale |
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Most superficial strata. More prominent in thick skin than in thin skin. Constantly shed. Keratinized
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Stratum Corneum
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Deepest strata. Produces new epithelial cells.
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Stratum Basale
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Thick skin
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1 mm Deep
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Thin skin
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0.1 mm Deep
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Skins main pigment. Dark pigment that colors the skin & protects it from suns harmful rays
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Melanin
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Cells that produce Melanin
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Melanocytes
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Dermis is also called ?
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True Skin
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Dermis contains what accessory structures
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-Hair Follicles -Sebaceous Glands -Sudoriferous Glands -Sensory Receptors -Blood Vessels |
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The dermis has what kind of connective tissue
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Dense Irregular Connective
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The subcutaneous layer is AKA
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Hypodermis or Superficial Fascia
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Subcutaneous layer has what kind of connective tissue?
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Loose Connective Tissue
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Coiled, tubelike structures located in the dermis & subcutaneous tissue
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Sudoriferous Glands
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Sudoriferous Glands are AKA
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Sweat Glands
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Sebaceous glands are AKA
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Oil Glands
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What glands are modified Sudoriferous glands?
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-Ceruminous Glands -Ciliary Glands -Mammary Glands |
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Glands in the ear canal that produce cerumen
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Ceruminous Glands
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Glands at the edges of the eyelids
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Ciliary Glands
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Glands in the breasts
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Mammary Glands
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Part of hair that projects above the skin
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Shaft
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Portion of hair below the skin
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Root
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Hair loss involves only ?
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Shaft & Root
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"Goose-bumps". "Hair-Raiser". More important in animals than humans.
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Arrector Pili
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Main functions of the integumentary system
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-Protect Against Infection -Protect Against Dehydration (drying) -Regulation of Body Temp. -Collection of Sensory Info |
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Apocrine glands are always associated with ?
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Hair Follicles
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Accessory structures of the skin
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-Sebaceous (oil) Glands -Sudoriferous (sweat) Glands -Hair -Nails |
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What helps protect the skin & give it more functions?
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Accessory Structures
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Sudoriferous glands can be either ?
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-Eccrine -Apocrine |
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Sweat glands distributed throughout skin (pores)
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Eccrine Sweat Gland
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Sweat glands located mainly in the armpits & groin area
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Apocrine Sweat Gland
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Intracellular protein in epithelial cells
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Keratin
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Extracellular protein in connective tissue
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Collagen
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Loss of cells from the surface of tissue, skin
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Exfoliation
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Extensions of the dermis that project up into the epidermis; Contain blood vessels that supply the epidermis
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Dermal Papillae
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Protective covering of the base of the nail. Extension of stratum corneum
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Cuticle
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Sheath that encloses a hair
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Hair Follicle
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Gland that produces a secretion that lubricates the eyelases
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Meibomian Glands
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Underneath the nail plate. Highly vascular
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Nail Bed
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Growth region of the nail
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Nail Matrix
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Top of the nail
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Nail Plate
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Sac-like glands associated with hair follicles
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Sebaceous (oil) Glands
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Oily Secretion
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Sebum
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Hair includes:
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-Follicle -Shaft -Root -Arrector Pili Muscle |
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Nails include:
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-Root -Plate -Lunula |
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Hair grows from?
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Base of Follicle
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Touch receptor is called what?
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Meissner Corpuscle
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Pressure receptor is called what?
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Pacinian Corpuscle
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Skin protects against infection
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-Intact skin forms a primary barrier against invason -Interlocking pattern resists penetration -Shedding removes pathogens |
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Skin protects against dehydration
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-Skin prevents water loss by evaporation -Keratin in the epidermis -Sebum release from oil glands |
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Skin protects against body temp.
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-Constriction -Dilation -Evaporation |
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What is excreted in sweat?
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-Water -Electrolytes -Wastes |
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Skin manufactures what vitamin?
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D
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Absorbs what substances?
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Meds (Estrogen Patches) (Tobacco Patches)
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What skin color is brown?
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Melanin
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What skin color is red?
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Hemoglobin
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What skin color is yellowish red (orange)?
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Carotene
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Pigment that carries oxygen in red blood cells. Gives blood its color
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Hemoglobin
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Skin pigment obtained from carrots/squash.
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Carotene
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Cheese-like sebaceous secretion that covers a newborn
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Vernix Caseosa
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3 main pigments that impart color to the skin
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-Melanin -Hemoglobin -Carotene |
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