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
