ELAINE N. MARIEB EIGHTH EDITION 4 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by.

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Presentation transcript:

ELAINE N. MARIEB EIGHTH EDITION 4 Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings PowerPoint ® Lecture Slide Presentation by Jerry L. Cook, Sam Houston University ESSENTIALS OF HUMAN ANATOMY & PHYSIOLOGY Skin and Body Membranes

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin and Body Membranes  Function of body membranes  Line or cover body surfaces  __________ body surfaces

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Classification of Body Membranes  Epithelial membranes  __________ membrane  Connective tissue membranes

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Cutaneous Membrane  Cutaneous membrane = skin  A ____ membrane  Outermost protective boundary  Superficial epidermis  _____________________ __________ epithelium  Underlying dermis  Mostly _______ __________ tissue Figure 4.1a

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Mucous Membranes  Surface epithelium  Type depends on site  Underlying _______ __________ tissue (_______ ______)  Lines all body cavities that open to the exterior body surface  Often adapted for ____________ or____________ Figure 4.1b

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Serous Membranes  Surface ________ _________ epithelium  Underlying _______ connective tissue  Lines open body cavities that are closed to the exterior of the body  Serous layers separated by ________ fluid Figure 4.1c

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Serous Membranes  Specific serous membranes  ____________  _____________ cavity  ________  Around the _________  _____________  Around the ________ Figure 4.1d

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Connective Tissue Membrane  _________ membrane  Connective tissue only  Lines fibrous capsules surrounding _____ Figure 4.2

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Integumentary System  Skin (___________ membrane)  Skin derivatives  ________ glands  ______ glands  _______

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Functions  Protects deeper tissues from:  ___________ damage  __________ damage  ___________ damage  __________ damage  ___________ ________  _____________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Functions  Aids in heat regulation  Aids in excretion of ________ and ____ acid  Synthesizes _________ ___

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Structure  ___________ – outer layer  Stratified squamous epithelium  Often keratinized (hardened by _____)  __________  Dense connective tissue Figure 4.3

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Structure  Deep to dermis is the ____________  Not part of the skin  Anchors skin to underlying organs  Composed mostly of _________ tissue

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Layer of Epidermis  __________ _______  Cells undergoing ________  Lies next to dermis  _________ ________  _________ __________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Layer of Epidermis  ___________ _________  Occurs only in ________ _______  Located- __________________________  __________ _________  Shingle-like ______ _______

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Melanin  Pigment (melanin) produced by ___________  Color is _______ to _________ to ______  Melanocytes are mostly in the stratum ______  Amount of melanin produced depends upon ______ and __________ ____ ________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Dermis  Two layers  __________ layer  Projections called __________ _________  ________ _____________  Capillary loops  _________ layer  Blood vessels  _________  __________ __________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Structure Figure 4.4

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Normal Skin Color Determinants  ____________  Yellow, brown or black pigments  ___________  ______________ pigment from some vegetables  ________________  _____ coloring from blood cells in dermis capillaries  __________ content determines the extent of red coloring

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  __________ glands  Produce ____  Lubricant for skin  Kills ____________  Most with ducts that empty into ______ follicles  Glands are activated at ________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  Sweat glands  Widely distributed in skin  Two types  ___________  Open via duct to pore on skin surface  __________  Ducts empty into hair follicles

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Sweat and Its Function  Composition  Mostly water  Some metabolic waste  Fatty acids and proteins (__________ only)  Function  Helps _________ ________ ______  Excretes waste products  __________ nature inhibits bacteria growth  Odor is from associated ___________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  Hair  Produced by _______ ______  Consists of hard ___________ epithelial cells  ____________ provide pigment for hair color Figure 4.7c

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Hair Anatomy  Central _________  __________ surrounds medulla  _______ on outside of cortex  Most heavily keratinized Figure 4.7b

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Associated Hair Structures  Hair follicle  Dermal and epidermal sheath surround hair root  __________ _______  Smooth muscle = ___________ control  ____________ gland  ________ gland Figure 4.7a

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Appendages of the Skin  Nails  Scale-like modifications of the ________  Heavily keratinized  Stratum ________ extends beneath the nail bed  Responsible for growth  Lack of __________ makes them colorless

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Nail Structures  Free edge  ________  _______ of nail  __________ – proximal nail fold that projects onto the nail body Figure 4.9

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Homeostatic Imbalances  Infections  ____________ = TINEA PEDIS  Caused by _________ infection  Boils and carbuncles  Caused by __________ infection  ________ _____  Caused by ________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Homeostatic Imbalances  Infections and allergies  _________ _________  Exposures cause allergic reaction  ____________  Caused by __________ infection  ____________  Cause is unknown  Triggered by ________, ________, and ________

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Homeostatic Imbalances  Burns  Tissue damage and cell death caused by ______, ___________, UV radiation, or chemicals  Associated dangers  ______________  ___________ _________  __________ _______

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Rule of Nines  Way to _________ _____ _________________ ___________  Body is divided into _____ areas for quick estimation  Each area represents about _____ Figure 4.11a

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Severity of Burns  First-degree burns  Only ____________ is damaged  Skin is ____ and __________  Second degree burns  __________ and ________ _______ are damaged  Skin is red with _________  Third-degree burns  Destroys entire skin layer  Burn is ______________ or _______

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Critical Burns  Burns are considered critical if:  Over ______ of body has second degree burns  Over ______ of the body has third degree burns  There are third degree burns of the _____, ________, or _______

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer  Cancer – ___________ _______ ________  Two types  ___________  Does not spread (encapsulated)  ____________  ____________ (moves) to other parts of the body  __________ ______is the most common type of cancer

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer Types  ________ cell carcinoma  Least ___________  Most common type  Arises from ____________ ________  ________ cell carcinoma  Arises from __________ _________  Metastasizes to ________ _______  Early removal allows a good chance of cure

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings Skin Cancer Types  Malignant melanoma  Most deadly of skin cancers  Cancer of _____________  Metastasizes rapidly to lymph and blood vessels  Detection uses ________ rule

Copyright © 2006 Pearson Education, Inc., publishing as Benjamin Cummings ABCD Rule  A = ____________  Two sides of pigmented mole do not match  B = _________ ___________  Borders of mole are not smooth  C = __________  Different colors in pigmented area  D = _____________  Spot is larger then 6 mm in diameter