BIO Labs 3 & 4

apical surface
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Terms in this set (47)
stratified squamousdefense against invading microorganisms, lubrication epidermis (skin, cells keratinized), mouth, throat, esophagus, vagina, anal canaltransitionalcontraction and distension (swelling, stretching) parts of urinary tract, urinary bladderfunctions of CT (8)1. Binds structures together 2. Supports and protects 3. Serves as framework 4. Fills up spaces 5. Stores fat 6. Generates blood cells 7. Protects against infections 8. Helps repair tissue damagewhat does the matrix of CT contain?ground substance (proteoglycans) and fibers (collagen and/or elastin)fibroblastssecrete proteins that become fibersmacrophagesclear foreign particles from tissues, part of immune systemmast cellsrelease substance that hekp prevent blood from clotting, inflammatory responseWBCsmove into tissues during inflammatory responsechondrocytesspecialized cells in cartilageosteocytesspecialized cells in bonespecialized cells fxnsynthesis and maintenance of respective tissuecollagenous fiberswhite fibers/ thick fibers provide strength/ thin fibers form networks in organselastic fibersyellow fibers/ composed of elastin, thinner than collagen fibers, stretchLoose CTflexible/ elastic/ binding surrounding blood vessels, nerves, muscle fibers, muscle groups, skin contains both collagenous and elasticadiposestores triglycerides, fills space, cushions, holds organs in place, shock absorber, insulation, gives shape to body surfaces below the skin, around kidney and heart, around eyes, at joints (behind knee) no fibersdense regularstrength in one direction tendons, ligaments, aponeuroses mostly collagen fibersdense irregularmultidirectional strength dermis/ sheaths covering muscles, nerves, and blood vessels/ covering organs and joints/ sclera/ perichondrium/ periosteum mostly collagenelastic CTstretch, flexibility walls of arteries, trachea, larynx, b/n adjacent vertebrae mostly elastic fibersreticularframeworks liver, spleen lymph nodes mostly thin collagenhyaline cartilageprotecs nose, larynx, trachea, ribs, respiratory tubes collagenous fiberselastic cartilagestretching larynx, ear flaps elastic fibersfibrocartilageshock absorber vertebrae, knee collagen fibersunit of compact (cortical) boneosteoncenter of osteon is thehaversion canal which contains blood vessels and nerve fibersrings around haversian canallamellaespaces between lamellaelacunaelacunae houseosteocytesosteocytes are in contact with one another and blood vessels of the osteonic canal viacanaliculiEpiphysisEnd of a long bone, spongy (trabecular) boneDiaphysishollow tube of compact (cortical) bone, composed of osteons, central canalPhysiological functions of skin1-Regulation of body temperature 2-Protection 3-Sensation 4-Excretion 5-Synthesis of vitamin Dtop to bottom layers of epidermisstratum corneum stratum lucidem (thick skin on palms) stratum granulosum stratum spinsoum stratum basaleholocrine glands (sebaceous)secretion is made up of disintegrated cells and their contentsapocrine glandscells release small parts of cells that then release their contentsmerocrine glanscells release secretion and remain intactsweat glands can be...merocrine or apocrine glandswhat gland is in the earceruminous glands