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INEGUMENTARY martini
ch. 5 integumentary system
| Question | Answer |
|---|---|
| epidermis is made of up this kind of tissue | epithelial |
| dermis' made up of these tissue types | connective, nerve & muscle |
| __ makes up 90% of cells in the epidermis | kerantinocytes |
| provide melanin pigment | Menanocytes |
| cells that come from bone marrow | langerhan cells |
| theses cells provide immunity | langerhan cells |
| these cells form touch receptors | merkel cells |
| merkel cells lay in the ___ section of the epidermis | deepest layer |
| ___ layer contains dark staining keratohyalin granules | stratum granulosum |
| deepest single layer of cells | stratum basale |
| also called stratum germinativum | stratum basale |
| combination of merkel cells, melanocytes, keratinocytes & stem cells that repediately divide | stratum basale |
| in the stratum basale layer of the epidermis cells attach to each other & to basement membrany by _______ | desmosomes & hemidesmosomes |
| 8-10 cell layers held together by desmosomes | stratum spinosum |
| in this layer melanin taken in by phagocytosis from nearby melanocyes | stratum spinosum |
| 3-5 layers of flat dying cells showing nuculear deneration | stratum granulosum |
| this layer contains lamellar granules that release lipids that repels water | stratum granulosum |
| this layer is only seen in thick skin | stratum lucidum |
| 3-5 layers of flat dead cells contains precusor to keratin | stratum lucidum |
| 25-50 layers flat dead cells filled w/ keratin and surrounded by lipids | stratum corneum |
| layer of epidermis that friction stumulates callus formation | stratum corneum |
| stem cells divide to produce ___ | keratinocytes |
| Af keratinocytes are pushed up towards the surface, they fill with ___ | keratin |
| It takes __ weeks for a cell to travel through all the layers | 4 |
| This hormone can speed up the cells journey through the epidermis | epidermial growth factor (efg) |
| These compose the dermis | collagen, elastic fibers, fibroblasts, macrophages & fat cells |
| this layer contains hair follicles, glands, nerves & blood vessels | dermis |
| two major regions of dermis | papillary & reticular regions |
| anchor epidermis to dermis, contain capillaries that feed epidermis& contains meissner's corpuscles are functions of the __ region | papillary region |
| the papillary region contains ___ &makes up the __ of the dermis | dermal papillae (finger like projections) to 20% |
| the recticular region is made up of this type of tissue | connective |
| This region is packed with oil glands, sweat glands ducts & hair follicles | recticular region |
| this region provides strength extensibility and elasticity to skin (strech marks) | recticular region |
| epidermal ridges form in fetus as epidermis conforms to dermal papillae (increasese gripi of hands)which region does this occur in? | recticular |
| melanocytes convert ___ to melanin | tyrosine |
| inherited lack of tyrosinase | albinism |
| autoimmune loss of melanocytes in areas of the skin (white patches) | vitiligo |
| This precursor to vitamin A is found in stratum corneum & dermis | carotene |
| red oxygen carrying pigment in bloodcells | hemoglobin |
| yellowish color to skin and whites of eyes buildup of bilirubin in blood from liver disearse | jaundice |
| bluish color in nail bds aand skin hemoblobin depleted of oxygen looks purple blue | cyanotic |
| redness of skin due to enlargement of capillaries in dermis during inflammation & infection it burn | erythema |
| cells sink inwards during development to form: | hair, oil glands, sweat glands (sudoriferous, & nails |
| core of the hair | medulla |
| daughter cells farther from the center of the hair matrix for the _____ (intermed layer) | cortex |
| surface of hair | cuticle |
| CS round in straigh hair oval in curly | no answer |
| this surounds the hair root and the deeper portion of the shaft. produced by cells at the periphery of hair mtris | internal root sheath |
| extends from skin surface to hair matrix cell layers foun in the superficial epidermis | external root sheath |
| thickened basal lamina wrapped in dense connective tissue sheath | glassy membrane |
| base of hair follicle is ___ (germindal cell layer) | hair bulb (surrounds hair papillia) |
| these detect hair movement | hair root plexus |
| smooth muscle in dermis contracts with cold/fear gOoOooOosebumps form as hairs pulled virtically | arrector pili |
| in the growth stage the matrix cells at the base of hair root produce ____ | length of hair |
| The resting stage of hair last for ___ and folicle atrophies | 3 months |
| blonde & red hair contain melanin with ____ | iron and sulfer |
| oil glands: secretory portion in the dermis, most open onto hair shafts | sebaceous gland |
| this keeps hair soft, is composed of cholestoerol, proteins fats & salts, and inhibits growth of bacteria | sebum |
| sudoriferous glans that are in most areas of the skin, secrete portion in dermis w/ duct to serfact, regulatebod temp | eccrine glands |
| found in the armpit and pubic region, secretes entire cell to cause lager oder, | apocrine glands |
| these glands produce waxy secretion in ear canal | ceruminous glands |
| nails are composed of tightly packed _____cells | keratinized |
| the lunula appears white due to thickedned ____ | stratum basale |
| cuticle (eponychium) is made up of this | stratum corneum |
| visible portion of nail pink due to ___ | underlying capillaries |
| another name for cuticle | eponychium |
| nails grow this fast | 1mm/week |
| thick skin lacks this | hair folicles & sebaceous glands |
| in which layer of the skin does cell division occur? | stratum germinativum |
| which layer consists of loose connective tissue & contains capiliaries & sensory neurons | papillary region |
| this region consists of dense irregular connective tissue and bundles of colagen fibers | recticular region |
| pressure sores | decubitus ulcers |
| eoudernus develops from this germ layer | ectodermal |
| dermis develops from this gem layer | mesodermal |
| fetal hair | lanugo |
| slipper coating of oil and slothed skin present at birth | vernix caseosa |
| non-life threatening skin cancer | basal cell carcinoma & squamous c ell carcinoma |
Created by:
snuffleupagus
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