Integumentary System
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| 2 regions of the skin | Epidermis, dermis
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| Most superficial layer of skin | Epidermis
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| 4 cell types found in the epidermis | Keratinocyte, melanocyte, epidermal dendritic cells, tactile cells
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| Fibrous protein that gives skin protective properties | Keratin
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| Cell that synthesizes melanin | Melanonocyte
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| Langerhans cells | Epidermal dendritic cells
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| Cells that activate the immune system | Epidermal dendritic cells
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| Tactile sensory receptor cell | Merkel cells
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| Most superficial layer of the epidermis | Stratum Corneum
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| Deepest epidermal layer | Stratum Basale
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| aka Stratum germinativum | Stratum Basale
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| Layer responsible for cell renewal | Stratum Basale
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| aka prickly layer | Stratum Spinosum
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| Contains keratinocytes linked by desmosomes | Stratum Spinosa
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| This layer contains a high volume of Langerhans cells | Prickly layer
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| Lamellated granules | Stratum granulosum
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| 3-5 cell layer where keratization begins | stratum granulosum
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| Glycolipids which cause the skin to be waterproof are in which layer | Stratum granulosum
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| aka Horny layer | Stratum corneum
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| Thickest epidermal layer | stratum corneum
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| Layer with fully keratinized cells | stratum corneum
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| Layer found only in the thick skin | stratum lucidium
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| Layer above the stratum granulosum in the thick skin | stratum lucidium
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| Layer of skin associated with leather-"hide" | Dermis
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| Superficial layer of the dermis | Papillary layer
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| Layer of Areolar C.T. | Papillary layer
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| Projections of the papillary layer that project into the epidermis | dermal papillae
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| Friction ridges and sweat glands combine to form: | Fingerprints
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| Meissners corpuscles | Light touch receptors
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| Layer of the dermis made of dense irregular C.T. | Reticular layer
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| Thicker part of the dermis | Reticular layer
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| Bundles of collagen | Cleavage/tension lines
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| Dermal folds near joints | Flexure lines
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| Crimson pigment | Hemoglobin
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| Cyanosis | Bluing of skin during heart failure and severe respiratory disorders
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| aka merocrine glands | Eccrine glands
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| Sweat glands abundant on palms, soles of feet and forehead | Eccrine glands
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| 2 types of sweat glands | Eccrine and apocrine
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| aka sudoriferous glands | sweat glands
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| Sweating is regulated by this system | Autonomic nervous system
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| Most abundant sweat gland | Eccrine gland
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| Sweat glands activated by puberty | Apocrine glands
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| Sweat gland found in the axillary and genital areas | Apocrine gland
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| Gland found in the external ear | Ceruminous gland
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| Modified sweat gland | Mammary gland
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| Gland that produces cerumen | Ceruminous gland
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| Gland producing sebum | Sebaceous gland
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| Glands which dump product into the hair follicle | Apocrine and sebaceous
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| Holocrine type gland | Sebaceous gland
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| Glands activated during puberty | Apocrine and sebaceous
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| What forces sebum out of the hair follicle onto the skin? | Arrector pili
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| What is created by the low pH of the secretions on the skin? | Acid mantle
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| What forms the chemical barrier on the skin? | Acid mantle
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| What forms the physical barrier of the skin? | Keratinized cells and glycolipids
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| What creates the biological barrier of the skin? | Dendritic cells and macrophages
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| Unnoticeable sweating | Insensible sweating
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| Obvious sweating-visible | Sensible sweating
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| Pacinian corpuscles | Deep pressure sensors
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| How much blood can the skin hold? | 5% of total volume
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| Metabolic function of the skin | Sunlight turns cholesterol into inactive vit D
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| Skin as a secondary excretion organ | small amount of nitrogenous wastes in the sweat
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| Least malignant cancer | Basal cell carcinoma
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| Most malignant cancer | Melanoma
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| Cancer of the stratun basale cells | Basale cell carcinoma
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| Cancer of the keratinocytes of the stratum spinosa | Squamous cell carcinoma
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| Cancer of the melanocytes | Melanoma
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| Rules for recognizing melanoma | Asymmetry, Border, Color, Diameter
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| Tissue damage caused by heat | Burn
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| Body area burned | Rule of nines
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| Cheesy looking substance protecting the skin of a fetus | Vernix caseosa
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