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18 Cards in this Set
- Front
- Back
Epidermis |
Top layer of the skin; keratinized stratified squamous epithilium |
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Keratinocyte |
Dead cells; synthesize keratin |
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Melanocyte |
Occur only on the stratum basale; synthesize the brown to black pigment melanin |
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Stratum Corneum |
Superficial layer composed of dead cells called keratinocytes |
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Stratum Lucidum |
Single layer of translucent, dead cells found only in the palms and the soles of feet |
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Stratum Granulosum |
Superficial cells are dead, but the deeper cells are alive |
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Stratum Spinosum |
First layer with actively metabolizing cells; contains pigment melanin |
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Stratum Basale |
Deepest layer contains a single row of actively dividing cells |
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Dermis |
Second layer deep in the skin; connective tissue layer |
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Dermal Papillae |
Fingerlike projections that project into the epidermis |
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Pacinian (lamellated) Corpuscle |
Pressure receptors within the reticular layer |
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Meissner's (tactile) Corpuscle |
Sensory receptors in that skin that detect fine touch |
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Hypodermis |
Third layer deep in the skin beneath the dermis |
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Sweat Gland |
Exocrine gland that secretes sweat through a small pore |
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Sebaceous Gland |
Exocrine gland that secretes sebum (oil) into a hair follicle |
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Hair Follicle |
An epithelial tissue-lined sheath surrounding the hair bulb |
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Nails |
Composed primarily of dead, keratinized cells |
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Arrector Pili Muscle |
Bundle of smooth muscles extending from dermal collagen fibers to the connective tissue root sheath of the follicle |