2. 3 Membranes and the Integumentary System
Lesson 3.1: Body Membranes Lesson 3.2: The Integumentary System Lesson 3.3: Injuries and Disorders of the Skin

3. Chapter 3: Membranes and the Integumentary System
Lesson 3.1
Body Membranes

4. Do Now – Pick 4 words and write the definition of each.
Membranes – Pg. 84
Pleura – Pg. 84
Cutaneous Membranes – Pg. 84
Serous Fluids – Pg. 84
Serous Membranes – Pg. 84
Epithelial Membranes – Pg. 84
Synovial Fluid – Pg. 84
Mucous Membranes – Pg. 84
Synovial Membranes – Pg. 84
Pericardium – Pg. 84
Peritoneum – Pg. 84

5. Today’s Objectives
Identify the different types of body membranes and explain their functions.
Explain the purposes of serous fluid and synovial fluid.

6. Body Membranes
Membranes – surround and help protect the body’s surfaces.
Include cavities that open to the outside world, internal cavities that house body organs, capsules that surround ball-and-socket synovial joints and the skin.
Epithelial membranes
mucous membranes
serous membranes
cutaneous membranes
connective tissue membranes
synovial membranes

7. Epithelial Membranes Mucous membranes
line cavities open to the environment
Includes all of the hollow organs of the respiratory, digestive, urinary, and reproductive tracts.
Examples: mouth, nose, lungs, digestive tract, and bladder.
Structure
Comprised of a layer of epithelium on top of loose connective tissue
Mucous membranes are all moist: the membranes of the digestive and respiratory tracts secrete mucus, and glands in the urinary tract add mucus there.
Mucus is a slippery solution that protects the mucous membranes and aids in transporting substances.

8. Serous membranes line cavities not open to environment Structure
pleura – encloses the lungs
Pericardium – surrounds the heart
Peritoneum – lines the abdominal cavity
Structure
Outer layer of simple squamous (flattened) epithelium on a thin layer of loose connective tissue.
Secrete a thin, clear fluid called serous fluid
Lubricates between the parietal and visceral membranes to minimize friction and “wear and tear” on organs that move within the linings, such as the heart.

9. Cutaneous membranes form what we know as skin Structure
The basic structure of skin is a keratinizing stratified (layered) squamous epithelium over dense, fibrous connective tissue.

10. Mucous Membranes and Serous Membranes

11. Connective Tissue Membranes
Synovial membrane
capsule around synovial joint
Example: Shoulder and knee
tendon sheath – the connective tissue that surrounds tendons, as well as bursae
Bursae – the small connective tissue sacs that serve as cushions for tendons and ligaments surround the joints.
synovial fluid – provides cushioning and reduces friction and wear on moving structures.

12. Review and Assessment
Match these words with 1–4 below: synovial, mucous, cutaneous, serous. 1. line cavities open to the environment 2. line cavities not open to the environment 3. tendon sheath 4. form skin

13. END

14. Exit Ticket
Membranes surround and protect which of the following surfaces?
a. ball-and-socket synovial joints
b. internal cavities housing organs
c. cavities open to the outside world
d. all of the above
e. none of the above

15. 2) True or False: Mucous Membranes tend to be dry
2) True or False: Mucous Membranes tend to be dry. 3) ______ membranes provide a lining for the internal and external surfaces of the body. a. Mucous b. Cutaneous c. Serous d. Epithelial

16. 4) The cutaneous membrane is the same name for what we know as ____________. a. the lungs b. the digestive tract c. the skin d. the bladder

17. 5) True or False: Serous fluid serves as a lubricant between membranes to minimize friction.

18. Answers
D. All of the above
False
D. Epithelial
C. The Skin
True

19. The Integumentary System
Chapter 3: Membranes and the Integumentary System
Lesson 3.2
The Integumentary System

20. The Integumentary System
functions of the integumentary system
anatomy of the skin
appendages of the skin

21. Functions of the Integumentary System
protects against
abrasion
chemical damage
drying out
UV radiation damage
regulates body temperature

22. Functions of the Integumentary System

23. Anatomy of the Skin
epidermis
dermis
hypodermis

24. Layers of the Epidermis

25. Review and Assessment True or False?
1. The dermis is the superficial layer of the skin.
2. The skin helps regulate body temperature.
3. The epidermis has three layers.
4. The hypodermis is above the dermis.
5. The skin protects against UV radiation.

26. Epidermal Cells keratinocytes epidermal dendritic cells Merkel cells
produce keratin, form layers of epidermis
epidermal dendritic cells
ward off infections
Merkel cells
touch receptors

27. Dermis dense, fibrous connective tissue papillary layer
forms fingerprints
reticular layer

28. Hypodermis fibrous connective tissue adipose tissue padding insulation
energy storage

29. Appendages of the Skin sudoriferous (sweat) glands sebaceous glands
eccrine
apocrine
sebaceous glands
hair
nails

30. Review and Assessment
Fill in the blanks with: hypodermis, keratinocytes, sweat, or papillary.
1. Eccrine is a type of _______________ gland.
2. _______________ produce keratin.
3. Adipose tissue is found in the _______________.
4. The _______________ of the dermis forms fingerprints.

31. Injuries and Disorders of the Skin
Chapter 3: Membranes and the Integumentary System
Lesson 3.3
Injuries and Disorders of the Skin

32. Injuries and Disorders of the Skin
injuries of the skin
infections of the skin and membranes
inflammatory conditions of the skin and membranes
cancers of the skin

33. Injuries of the Skin decubitus ulcers burns bedsores
caused by restricted blood supply
burns
first-, second- or third-degree
caused by heat, chemicals, electricity or UV radiation
rule of nines
Suzanne Tucker/Shutterstock.com, JTeffects/Shutterstock.com, Naiyyer/Shutterstock.com

34. Infections of the Skin and Membranes
viral infections
herpes varicella
herpes zoster
herpes simplex virus type 1 or type 2
human papillomavirus
warts
Maksym Bondarchuk/Shutterstock.com

35. Infections of the Skin and Membranes
fungal infections
athlete’s foot
jock itch
ringworm
toenail fungus
bacterial infections
impetigo
cellulitis

36. Inflammatory Conditions of the Skin and Membranes
pleurisy
makes smooth surface of pleura rough
peritonitis
infection of peritoneum
psoriasis
involves redness and irritation
Kenxro/Shutterstock.com

37. Cancers of the Skin basal cell carcinoma squamous cell carcinoma
malignant melanoma
ABCD rule
Librakv/Shutterstock.com

38. Review and Assessment True or False?
1. Herpes zoster causes decubitus ulcers.
2. Peritonitis is an infection of the skin.
3. Impetigo is caused by a fungus.
4. Warts are caused by a virus.
5. Ringworm is caused by a fungus.