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Biology 106
Chapter 6
22
Biology
Undergraduate 1
06/21/2010

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Term
INTEGUMENTARY SYSTEM
Definition
Consists of the skin and its accessory organs. (hair, nails, and cutaneous glands)
Term
SKIN
Definition
the most vulnerable organ.
Term
DERMATOLOGY
Definition
scientific study and medical treatment of the integumentary system.
Term
EPIDERMIS
Definition
keratinized stratified squamous epithelium.
Term
DERMIS
Definition
connective tissue layer. composed mainly of collagen with eastic fibers, reticular fibers, and fibroblasts. well supplied with blood vessels, sweat glands, sebaceous glands, and nerve endings.
Term
HYPODERMIS
Definition
another connective tissue layer below the dermis.
Term
resistance to trauma and infection, sensation, other barrier functions, thermoregulation, nonverbal communication, vitamin D synthesis, and transdermal absorption.
Definition
functions of the skin.
Term
RESISTANCE TO TRAUMA AND INFECTION
Definition
keratin and acid mantle.
Term
SENSATION
Definition
skin is our most extensive sense organ.
Term
OTHER BARRIER FUNCTIONS
Definition
waterproofing, UV radiation, and harmful chemicals.
Term
THERMOREGULATION
Definition
thermoreceptors, and vasoconstriction/vasodilation.
Term
NONVERBAL COMMUNICATION
Definition
acne, birthmark, or scar.
Term
VITAMIN D SYNTHESIS
Definition
skin first step. liver and kidney complete process
Term
TRANSDERMAL ABSORPTION
Definition
administration of certain drugs steadily through thin skin. adhesive patches.
Term
stem cells, keratinocytes, melanocytes, tactile (merkel) cells, and dendrictic (langerhans) cells
Definition
cells of epidermis.
Term
STRATUM BASALE
Definition
a single layer of cuboidal to low columnar stem cells and keratinocytes resting on the basement membrane.
Term
MELANOCYTES and TACTILE CELLS
Definition
scattered among the stem cells and keratinocytes.
Term
stem cells of stratum basale divide
Definition
give rise to keratinocytes that migrate toward skin surface. replace lost epidermal cells.
Term
STRATUM SPINOSUM
Definition
consists of several layers of keratinocytes.
Term
keratin filaments
Definition
causes cell to flatten
Term
Dendritic Cells
Definition
found throughout the stratum.
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