1. 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

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

3. Body Membranes epithelial membranes connective tissue membranes
mucous membranes
serous membranes
cutaneous membranes
connective tissue membranes
synovial membranes

4. Epithelial Membranes mucous membranes serous membranes
line cavities open to the environment
serous membranes
line cavities not open to environment
cutaneous membranes
form what we know as skin

5. Mucous Membranes and Serous Membranes

6. Connective Tissue Membranes
synovial membrane
capsule around synovial joint
tendon sheath
synovial fluid

7. 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

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

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

10. Functions of the Integumentary System

11. Anatomy of the Skin
epidermis
dermis
hypodermis

12. Layers of the Epidermis
Sweat pore
Shedding keratinocytes
Dead keratinocytes
Living keratinocytes
Dendritic cell
Stem cell
Sweat duct
Melanocyte
Dermis
Dermal papilla
Tactile nerve fiber
Dermal blood vessel

13. 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.

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

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

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

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

18. 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.

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

20. 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

21. 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

22. The Rule of Nines
The rule of nines recognizes the fact that the adult body is fairly evenly divided by nine:
9% for whole head
9% for left arm
9% for right arm
18% for anterior torso (chest/stomach)
18% for posterior torso (back)
18% for left leg
18% for right leg
(If you are observant enough to notice this only adds up to 99%, you are smart enough to figure out where the other 1% is located!)

23. Burn Size: The Rule of Nines
Another (perhaps easier) way to think of this:
9% for whole head
9% for left arm
9% for right arm
9% for abdomen
9% for anterior thorax (chest)
9% for posterior thorax (upper back)
9% for posterior abdomen (lower back)
9% for anterior right leg
9% for anterior left leg
9% for posterior right leg
9% for posterior left leg

25. Burn Size: The Rule of Nines
A third method recognizes the fact that the patient’s closed hand is equal to approximately 1% of their body surface area
Small burns, or the unburned area of patients with nearly 100% burns, may be measured in this way

26. Determining Burn Severity: Depth
Human skin has two major layers followed by fat, fascia and muscle
The epidermis layer of the skin consists of dry, mostly dead, mostly insensitive skin. It is the ‘top’ and outside layer. Burns to the epidermis are generally 1st degree, or partial thickness, and are not considered clinically significant. Sunburns fall into this category
The dermis lies beneath the epidermis, is wet, has blood flow, and contains hair follicles and sweat glands. It also houses sensory nerves. Burns to the dermis are 2nd degree, or partial thickness and generally require medical attention
The subcutaneous layer lies beneath the dermis. It consists of a thin layer of fat, fascia and then muscle. Subcutaneous burns are 3rd degree, or full thickness, and always require medical attention

27. 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

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

29. 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

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

31. ABCD Rule

32. 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.