integumentary system (the skin, hair, and nails) integument = covering sports training and...

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  • Integumentary System(the skin, hair, and nails)

    Integument = coveringSports Training and PhysiologyKociuba

  • Integumentary System - ObjectivesRecall the structures of the Integumentary systemDiscuss all the major functions of the integumentary systemExplain the dangers your body may encounter with the integumentary systemDescribe how the integumentary system changes as you age

  • Structure of the SkinEpidermis

    Dermis

    Subcutaneous Tissue

  • EpidermisHas no blood vesselsIt is nourished by the dermis and the diffusion of the capillaries that are close to the surface of the dermisTypically cells are called keratinocytes because the produce keratin which makes cells hardExfoliating gets rid of the Epidermis

  • Are you thick skinned? Skin is classified as thick or thin based upon the epidermis.Most skin found on the palms of your hands and the soles of your feet are thick.Found in areas subject to much pressureThin skin is found around the rest of your bodyMore flexible than thick skin.

  • DermisThe dermis is connective tissue with blood vessels providing nourishmentThe main connective tissue that is found in the dermis is collagen It resides under the Epidermis and is considered new skin

  • Subcutaneous/Hypo DermisNot considered part of the skinMainly adipose tissue (fat)Approx of our stored fat is found in this layerThe subcutaneous tissue connects the skin to the underlying bone and muscle

  • Accessory Skin StructuresHair StructureShaft: protrudes above the surface of the skinRoot: below the surfaceHair bulb: base of the rootHair follicle: tube like bulb where the hair develops

  • Accessory Skin StructuresNailsBodyRoot FoldCuticleBed

    **Consist of dead cells and hard keratin

  • Functions of the Integumentary SystemProtectionInfectionAbrasionsUltraviolet lightSensationDetect heat, cold, pressure and painTemperature RegulationSweatVitamin D productionWhen exposed to ultraviolet light, produces a molecule that can make vitamin DExcretionSmall amounts of waste can be excreted through glands in the skinSweat

  • Skin Cancer (3 types)Basal Cell CarcinomaMost common

    Squamous Cell CarcinomaSecond Most Common

    MelanomaLeast CommonMost Deadly

  • Early Detection - ABCDEA: Asymmetry (one side doesnt match the other)B: Border Irregularity (edges are ragged, notched, or blurred)C: Color (pigmentation is not uniform)D: Diameter (greater than 6mm)E: Evolving (lesion changes over time)

  • Aging and the SkinEpidermis thins as you ageThe collagen production in the dermis decreases (wrinkling)Decrease in elastic fibers in the dermis (wrinkling)Age spotsGrey or white hair (melanin production decreases)

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