Term
| what is in the integumentary system? |
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Definition
| hair, skin, nails, and membranes |
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Term
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Definition
thin, sheet-like structures that cover and protect, line body cavities, and cover inner surfaces
line, protect, and lubricate |
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Term
| two main types of body membranes |
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Definition
| epithelial and connective |
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Term
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Definition
| composed of epithelial tissues and underlying layer of connective tissue |
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Term
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Definition
| composed only of various connective tissues |
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Term
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Definition
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Term
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Definition
type of epithelial tissue
skin
primary organ of integumentary system
largest and most visible organ |
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Term
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Definition
type of epithelial membrane
lines body cavities
covers surfaces of organs
single continuous sheet
parietal portion lines the walls, visceral portion lines the organs |
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Term
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Definition
type of epithelial membrane
lines body surfaces open to the exterior
lines the respiratory, digestive, urinary, and reproductive tracts |
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Term
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Definition
| point of fusion where skin and mucus membranes meet, like eyelids, nasal openings, anus, and lips |
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Term
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Definition
type of connective tissue membrane
lining of spaces between the bones and joints
smooth and slick
creates a synovial fluid (thick and colorless)
helps reduce friction |
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Term
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Definition
| epidermis (stratified squamous), dermis (connective tissue),and subcutaneous (fatty tissue) |
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Term
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Definition
| stratum corneum, stratum lucidum, stratum granulosum, stratum spinosum, stratum basale/germinativum |
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Term
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Definition
layer of dead cells
cells of cytoplasm have been replaced by keratin
keratin=tough, waterproof protein |
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Term
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Definition
| very thin clear band of flattened dead cells (not always present) |
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Term
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Definition
| layer with distinct granules that are a part of the keratinization process |
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Term
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Definition
| several layers of cells that contain a "spiny-looking" protein |
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Term
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Definition
| several layers of cells that contain a "spiny-looking" protein |
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Term
| Stratum Basale/ Germinativum |
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Definition
deepest layer
rapid cell division
pigment layer, contains melanocytes which produce melanin |
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Term
| what determines skin color |
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Definition
genetics
sunlight
volume of blood in skin
blood oxygen levels (cyanosis-blueish gray tinge to skin) |
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Term
| dermal epidermal junction |
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Definition
the area of contact between the dermis and the epidermis
glues layers together
provides support for epidermis |
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Term
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Definition
stable connective tissue layer
filled with types of fibers for strength and elasticity
filled with blood vessels and appendages of the skin
dermal papillae (peg-like projections on the upper region of the dermis) |
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Term
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Definition
| fibers in the dermis weaken with age, which causes the skin to sag |
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Term
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Definition
when layers of the skin separate from each other and fill with fluid
painful if they occur at an epidermal-dermal junction |
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Term
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Definition
Skin Receptor
close to the skin surface
detects light touch |
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Term
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Definition
Skin Receptor
detects pain |
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Term
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Definition
Skin Receptor
detect sensation to temperature |
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Term
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Definition
Skin Receptor
deep in the dermis
detects pressure |
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Term
| sudoiferous (sweat) glands |
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Definition
eliminates waste and cools the body down
most numerous of the skin glands |
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Term
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Definition
lubricates skin and hair
increased production during childhood
decreased production during late adulthood |
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Term
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Definition
type of sweat gland
most numerous and widespread |
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Term
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Definition
type of sweat gland
found mainly in skin of armpits and genitals
excrete a thicker, milkier sweat |
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Term
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Definition
| due to bacteria breaking down the secretion of the thick, milky sweat of the apocrine glands |
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Term
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Definition
| amounts of melanin vary from person to person |
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Term
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Definition
| people are born with the same number of melanocytes |
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Term
| adaptation of sensory receptors |
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Definition
| When a stimulus is applied for a prolonged period, the rate of receptor response slows and our conscious awareness of the stimulus declines or is lost until some type of stimulus change occurs. |
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Term
| parts of the hair follicle |
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Definition
(small tube where hair growth occurs)
sebaceous gland (secretes oil)
arrector pili muscle (raises hair)
hair papilla (where growth takes place) |
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Term
| hair and nail similarities in comparison to the epidermis |
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Definition
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Term
| parietal portion of serous membranes |
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Definition
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Term
| visceral portion of serous membranes |
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Definition
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Term
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Definition
| serous membrane in the thoracic cavity |
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Term
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Definition
| double-walled sac that lines the heart |
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Term
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Definition
| serous membrane in the abdominal cavity |
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Term
| varying touch receptor density across the body |
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Definition
tactile resolution: the ability to discriminate between points of stimulation
some parts of the body have a very high density, as on the fingertips, but not on the back. |
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Term
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Definition
| free edge, nail body, lunula, cuticle, nail root |
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