Unit 3 SeminarUnit 3 SeminarThe Integumentary System The Integumentary System

and Body Membranesand Body Membranes

Chapter 6 ThibodeauChapter 6 ThibodeauAmy J. Hilbelink Ph.D.Amy J. Hilbelink Ph.D.

Classification of body membranesClassification of body membranes

EpithelialEpithelial ConnectiveConnective

Classification of body membranesClassification of body membranes

EpithelialEpithelial Cutaneous membraneCutaneous membrane Serous membraneSerous membrane Mucous membraneMucous membrane

ConnectiveConnective

Functions of SkinFunctions of Skin

ProtectionProtection Temperature regulationTemperature regulation Sense organ activitySense organ activity

Let’s discuss how the skin does this…Let’s discuss how the skin does this…

Serous membranesSerous membranes

Visceral Visceral = covers the surface of organs = covers the surface of organs found in body cavities.found in body cavities.

ParietalParietal = lines the wall of a body cavity, = lines the wall of a body cavity, much like wallpaper covers the walls of a much like wallpaper covers the walls of a roomroom

Serous membranesSerous membranes

Found only on Found only on surfaces surfaces within within closed closed cavities.cavities.

Transverse - section from below

Mucous membranesMucous membranes

They line body cavities that open to the They line body cavities that open to the exterior of the body.exterior of the body.

The mucus keeps the area moist and The mucus keeps the area moist and lubricated.lubricated.

So, where in the body are they found?So, where in the body are they found?

Mucous membranes are found Mucous membranes are found in….in….

Respiratory tractRespiratory tract Digestive tractDigestive tract Urinary tractUrinary tract Reproductive tract Reproductive tract

Note that the secretion is spelled mucus Note that the secretion is spelled mucus and the membrane is spelled mucous.and the membrane is spelled mucous.

Did you know that skin has Did you know that skin has appendages?appendages?

HairHair Receptors (two kinds of receptor Receptors (two kinds of receptor

corpuscles)corpuscles) NailsNails Skin glandsSkin glands

Sudoriferous = sweatSudoriferous = sweat• Eccrine and apocrineEccrine and apocrine

Sebaceous glands = microscopicSebaceous glands = microscopic

Functions of SkinFunctions of Skin

ProtectionProtection Temperature regulationTemperature regulation Sense organ activitySense organ activity

What would happen in a burn situation?What would happen in a burn situation?

Degrees of burnsDegrees of burns

11stst degree degree Minor discomfort to epidermis, does not blisterMinor discomfort to epidermis, does not blister

22ndnd degree degree Involves deep epidermal layers and damage Involves deep epidermal layers and damage

to upper layers of dermis.to upper layers of dermis. 33rdrd degree degree

Complete destruction of the epidermis and Complete destruction of the epidermis and dermis. May require skin grafting or dermis. May require skin grafting or amputation of limbs.amputation of limbs.

Classification of burnsClassification of burns

1.1. Depth and number of tissue layers Depth and number of tissue layers involvedinvolved

2.2. Total body surface area affectedTotal body surface area affected

3.3. Type of homeostatic mechanisms, such Type of homeostatic mechanisms, such as respiratory or blood pressure control as respiratory or blood pressure control and fluid electrolyte balance, that are and fluid electrolyte balance, that are damaged or destroyed.damaged or destroyed.

Estimating body surfaceEstimating body surface

Matching exerciseMatching exercise

1.1. MelaninMelanin2.2. Epithelial membraneEpithelial membrane3.3. Pacinian corpuscle Pacinian corpuscle 4.4. SebaceousSebaceous 5.5. Waterproofing Waterproofing 6.6. HairHair7.7. LunulaLunula8.8. Connective tissue Connective tissue

membrane membrane 9.9. Dermal papillae Dermal papillae 10.10. SudoriferusSudoriferus

A. Fingerprint A. Fingerprint B. Pressure B. Pressure C. Brown pigment C. Brown pigment D. Pleura D. Pleura E. Synovial membrane E. Synovial membrane F. Perspiration F. Perspiration G. Oil G. Oil H. Follicle H. Follicle I. Keratin I. Keratin J. Little moon J. Little moon

Answers – how did you do?Answers – how did you do? 1. C1. C 2. D2. D 3. B3. B 4. G4. G 5. I5. I 6. H6. H 7. J7. J 8. E8. E 9. A9. A 10. F10. F

WeblinksWeblinks

BurnsBurns http://www.aafp.org/afp/20001101/2015.hthttp://www.aafp.org/afp/20001101/2015.ht

mlml Dermatology image bankDermatology image bank http://tray.dermatology.uiowa.edu/DermImhttp://tray.dermatology.uiowa.edu/DermIm

ag.htmag.htm

Any questionsAny questions

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