The Integumentary System Study Guide (1).pdf - I. Chapter 6...

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Chapter 6The Integumentary SystemI.Membrane typesA.Serousi.Lines interal cavities (parietal membranes).ii.Covers organs (visceral membranes).iii.Cells:simple squamous epithelium & connective tissueiv.Secretion:serous (watery) fluid, for lubrication.B.Mucousi.Lines cavities/tubes that open to the outside (mouth, nasal,anal, urinary, & reproductive).ii.Cells:epithelium and loose connective.iii.Secretion:mucous cells make mucous (thicker).C.Synoviali.Lines joint cavities between the ends of bones [Synovialjoints=moveable].ii.Cells:fibrous/loose connective & adipose.iii.Secretion:Synovial fluid-thick, colorless, lubricates the joints.D.Cutaneous(cut =skin)II.The functions of the skinA.Protection from…i. Water lossii.diseaseIii.injuryB.regulates body temperatureC.Sensoryi.temperatureii.touchIII.Layers of the skinA.epidermis[epi=upon, derm=skin]
i. Cells:Stratified squamous epithelium, no direct blood supply.ii.. Layers:1.Stratumbasal-layer closest to basement membrane, nourished by underlyingconnective tissue. Cells travel upward, die and becomekeratinized (waterproof).*Basalcell carcinoma originates here.Most commonly found on: sun exposed areas of fair-skinned and sun damagedindividuals. Most common cancer, about 400,000 victimsannually.Locally destructive, very rarely mestanizes. Can cause death2. Stratumcorneum-outer most layer of dead cells.*callus =growth exceeds rub off rate.iii. Melanocytes(melan=black, cyte=cell).Cells release melanin (pigment) to colorskin.iv. Melanin protects the deeper tissues from ultraviolet lightv. Skin Color1. Genetics and UV light affect skin color.2. Blood in the dermis may affect skin color.

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Term
Spring
Professor
BETH CHIRICHELLA
Tags
body temperature

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