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Integumentary System Created by Tina Weber, 2011.

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Presentation on theme: "Integumentary System Created by Tina Weber, 2011."— Presentation transcript:

1 Integumentary System Created by Tina Weber, 2011

2 Membrane Type and Function Cutaneous---skin, protection Cutaneous---skin, protection Mucous---lines body cavities open to exterior, wet to capture pathogens or aid in movement Mucous---lines body cavities open to exterior, wet to capture pathogens or aid in movement Serous---lines body cavities closed to exterior, prevents friction between organs Serous---lines body cavities closed to exterior, prevents friction between organs Synovial---line capsules surrounding joints, provide smooth lubricated surface or cushion Synovial---line capsules surrounding joints, provide smooth lubricated surface or cushion

3 Functions protection against mechanical damage protection against mechanical damage keratin toughens cells keratin toughens cells pressure receptors alert nervous system pressure receptors alert nervous system bed sores occur when person not moved and pressure cuts off blood supply bed sores occur when person not moved and pressure cuts off blood supply protection against chemical damage protection against chemical damage impermeable keratinized cells impermeable keratinized cells pain receptors alert nervous system pain receptors alert nervous system

4 protection against bacteria protection against bacteria unbroken surface with acidic secretions unbroken surface with acidic secretions phagocytes ingest pathogens phagocytes ingest pathogens clogged glands lead to acne clogged glands lead to acne protection against UV rays protection against UV rays melanin (pigment) protects cells nuclei melanin (pigment) protects cells nuclei freckles and moles are accumulation of melanin freckles and moles are accumulation of melanin cold sores appear more often after sunbathing cold sores appear more often after sunbathing

5 protection against thermal damage protection against thermal damage heat, cold and pain receptors signal nervous system heat, cold and pain receptors signal nervous system burns cause cell death and loss of fluids burns cause cell death and loss of fluids prevents desiccation--- drying out prevents desiccation--- drying out contains waterproofing substances contains waterproofing substances cracks can lead to infection cracks can lead to infection

6 controls heat loss and retention controls heat loss and retention loss---sweat glands activated and blood sent to skin capillaries loss---sweat glands activated and blood sent to skin capillaries retention---stops blood moving to capillaries retention---stops blood moving to capillaries heat stroke occurs when body is unable to lose heat heat stroke occurs when body is unable to lose heat helps with excretion of urea and uric acid helps with excretion of urea and uric acid both are found in sweat both are found in sweat inability to sweat can lead to electrolyte imbalance inability to sweat can lead to electrolyte imbalance synthesizes vitamin D synthesizes vitamin D cholesterol molecules converted by sunlight cholesterol molecules converted by sunlight deficiency can lead to osteoporosis deficiency can lead to osteoporosis

7 Skin Layers Epidermis---outer, hard and tough for protection Epidermis---outer, hard and tough for protection Dermis---middle, contains glands, follicles, blood vessels, nerve endings Dermis---middle, contains glands, follicles, blood vessels, nerve endings Hypodermis---layer of fat that anchors skin to organs Hypodermis---layer of fat that anchors skin to organs

8 Cutaneous Glands release secretions to skin surface via ducts release secretions to skin surface via ducts Sebaceous (oil) glands Sebaceous (oil) glands all over skin except palms and soles all over skin except palms and soles secrete sebum---oil and fragmented cells that lubricate skin, soften hair and kill bacteria secrete sebum---oil and fragmented cells that lubricate skin, soften hair and kill bacteria most active during adolescence most active during adolescence

9 Subdoriferous (sweat) gland Subdoriferous (sweat) gland spread throughout skin spread throughout skin secrete water, salts, vitamin C, urea, lactic acid---sweat secrete water, salts, vitamin C, urea, lactic acid---sweat pH of 4-6 kills bacteria pH of 4-6 kills bacteria evaporating sweat carries large amounts of body heat away evaporating sweat carries large amounts of body heat away

10 Hair covers entire body covers entire body provides head cushion, shields eyes, captures pollen and dust entering nose provides head cushion, shields eyes, captures pollen and dust entering nose

11 BURNS ---tissue damage and cell death caused by heat, electricity, UV radiation, or chemicals First degree First degree epidermis damaged epidermis damaged red and swollen red and swollen heal in 2-3 days with no treatment heal in 2-3 days with no treatment Second degree burn Second degree burn epidermis and upper dermis damaged epidermis and upper dermis damaged red, painful, blisters red, painful, blisters no scars if prevent infection no scars if prevent infection

12 Third degree burn Third degree burn dermis destroyed dermis destroyed gray or blackened, no pain gray or blackened, no pain skin grafts cover exposed tissue skin grafts cover exposed tissue wI&safety_mode=true&persist_safety_mode= 1&safe=active wI&safety_mode=true&persist_safety_mode= 1&safe=active Rule of Nines Rule of Nines measures volume of measures volume of water lost in burn victim water lost in burn victim body divided into 11 areas body divided into 11 areas (9% each) (9% each)

13 Skin Cancer most common type in humans most common type in humans causes include uv rays, frequent infection, chemicals, or physical trauma causes include uv rays, frequent infection, chemicals, or physical trauma

14 Basal Cell Carcinoma least malignant and most common least malignant and most common cells can’t form keratin cells can’t form keratin lesions occur on sun-exposed areas lesions occur on sun-exposed areas shiny, dome-shaped nodule, central ulcer shiny, dome-shaped nodule, central ulcer lesion removed surgically lesion removed surgically

15 Squamous Cell Carcinoma scaly, reddened papule, shallow ulcer scaly, reddened papule, shallow ulcer found on scalp, ears, hands, lips from sun found on scalp, ears, hands, lips from sun grows rapidly into lymph nodes grows rapidly into lymph nodes surgery or radiation therapy surgery or radiation therapy

16 Malignant Melanoma deadly deadly found wherever there is pigment and in some moles found wherever there is pigment and in some moles spreading brown or black patch spreading brown or black patch spreads rapidly to lymph nodes and blood vessels spreads rapidly to lymph nodes and blood vessels 50% survival 50% survival

17 ABCD Rule Asymmetry---2 sides don’t match Asymmetry---2 sides don’t match Border Irregularity---indentations along edge Border Irregularity---indentations along edge Color---different colors present Color---different colors present Diameter---larger than pencil eraser Diameter---larger than pencil eraser

18 Aging newborn---thin, vessels visible, little fat newborn---thin, vessels visible, little fat adolescence---skin and hair more oily, acne adolescence---skin and hair more oily, acne optimal appearance optimal appearance clogged pores cause pimples, scales and dermatitis clogged pores cause pimples, scales and dermatitis subcutaneous tissue decreases, dries out, thinner, decreased elasticity subcutaneous tissue decreases, dries out, thinner, decreased elasticity

19 Review hill.com/sites/ /student_view0/chapter5/chapter _quiz.html hill.com/sites/ /student_view0/chapter5/chapter _quiz.html hill.com/sites/ /student_view0/chapter5/chapter _quiz.html hill.com/sites/ /student_view0/chapter5/chapter _quiz.html Integumentary-System html Integumentary-System html Integumentary-System html Integumentary-System html AP%20Study%20Questions/Integumentary%20System.htm AP%20Study%20Questions/Integumentary%20System.htm AP%20Study%20Questions/Integumentary%20System.htm AP%20Study%20Questions/Integumentary%20System.htm flash-cards/ flash-cards/ flash-cards/ flash-cards/ cw/index.html cw/index.html cw/index.html cw/index.html


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