1. The INTEGUMENTARY System
Support Systems
Unit 2

2. Vocabulary Word parts cutane/o- skin Subcutaneous (beneath the skin)
Dermat/o- skin
Dermatologist (one who studies the skin)
Trich/o- hair
Trichopathy (any disease of the hair)
Pil/o- (pil/i-) hair
Pilocystic (a cyst containing hair)
- plasty surgical repair
Dermoplasty ( surgical repair of the skin)

3. Vocabulary Avascular having no blood flow
Metastasis movement from one part of the body to another, used often to describe cancer
Melanin causes coloration of skin hair and eye
Keratin causes skin to be waterproof
PA physician assistant

4. Functions of the Skin Protection Vitamin D Production Sensory Organ
Temperature Regulation
Protection against UV Light

5. Layers of the Skin
Epidermis
Dermis
Subcutaneous

6. Epidermis
Outer layer of skin
Avascular - no blood vessels

7. Dermis Layer of skin under the epidermis
Made up of collagen and elastic connective tissue fibers
Contains the blood vessels, glands, hair follicles, and nerve endings of the skin

8. Subcutaneous Layer Not part of the true skin
Connective tissue that connects the skin to the muscle and organs underneath
Also called the hypodermis
Contains nerve endings responsible for deep pressure
May contain enlarged fat cells in obese individuals

9. Nails Plates of tightly packed cells of the epidermis
Helps to grasp and manipulate small objects

10. Glands of the Skin Sudoriferous Glands (Sweat Glands)
Sebaceous Glands (Oil Glands)

11. Sudoriferous Glands (Sweat Glands)
Glands secrete sweat - a mixture of:
water - salts - amino acids
ammonia - urea - uric acid
sugar -lactic acid -ascorbic acid
Primary function - regulates body temperature by evaporation of water
Eliminates some waste products

13. Sebaceous Glands Oil glands usually associated with hair follicles
Secrete an oily substance called sebum a mixture of fats, cholesterol, protein and inorganic salts
Keeps hair from drying out and becoming brittle
Keeps skin soft and pliable
Inhibits growth of certain bacteria

15. Hair Composed of dead (Keratinized) skin cells
Primary function is protection
guards the scalp from injury and sunlight
eyebrows - eyelashes protect the eye
ears and nostrils keep out foreign objects
Helps regulate body temperature
Touch receptors associated with hair follicles

16. Hair Structures

17. Diseases and Disorders
Integumentary
System

18. Acne An inflammation of the sebaceous glands and hair follicles
Much more active at puberty
Affects boys more severely than girls
Caused by bacteria that colonize in the sebaceous follicles
Can be treated with over-the-counter medications or for severe cases, prescription medications

19. Athletes Foot A common infection caused by the tinea fungus
Symptoms include itching, burning, and cracked, scaly skin between the toes and on the feet
It grows best in damp, dark, warm places
Treatment includes over-the-counter antifungal creams for most cases and prescription medicines for more serious infections.

20. Ring Worm Caused by tinea fungus
Causes a red skin rash that forms a ring on normal looking skin
This is not caused by a worm
Common treatment includes over-the-counter antifungal creams

21. Jock Itch Cause by the tinea fungus
Causes an itchy, burning rash in the groin area
Common treatment includes over-the-counter- antifungal creams

22. Skin Cancers Cancerous growths of skin tissue
The sun is responsible for over 90% of all skin cancers
Three main types of skin cancers
Basal Cell Carcinomas
Squamous Cell Carcinomas
Malignant Melanomas
to 16 year old me/ and Steinfeld clips

24. Basal Cell Carcinoma The most common form of cancer
1 million new cases estimated in the U.S. each year
Occurs most frequently on the sun-exposed areas of the body (face, ears, neck, scalp, shoulders, and back)

26. Squamous Cell Carcinoma
The second most common form of skin cancer
Over 250,000 new cases per year
Most cases are caused by chronic overexposure to the sun
Tumors apperar most frequently on the sun exposed face, neck, bald scalp, ears, and lips

28. Melanoma Arises from the melanocytes
The least common but most dangerous form of skin cancer
In men is most common on the trunk, head, and neck.
In women is most common on the lower legs
How cancer spreads video

31. ABCDE Method to Assess Skin Cancer
A - Asymmetry
B - Border
C - Color
D - Diameter
E – Evolution or Elevation

35. Careers Dermatologist Medical Photographer Physician Assistant
Plastic surgeon

36. Dermatologist discovery/ dermatology
Concerned with the diagnosis and treatment of diseases of the skin, hair and nails
8 years school + residency + specialization
$100,000 - $200,000
Prevention and treatment, surgery, cancer and laser surgery, cosmetic procedures- Botox, liposuction, chemical peeling, cryosurgery, eyelid surgery……
discovery/ dermatology

37. Medical Photography Biomedical photographers
Demonstrate artistic ability and scientific knowledge
Textbooks, pamphlets, advertisements, civil/legal procedures, teaching models, surgical procedures, medical progress or autopsy
Create prints, charts, graphs…
$30,000-50,000
Schooling emphasis on study of photography
how to become a medical photographer
award winning medical photographer

38. Physician Assistant
Practice medicine under the supervision of a physician/surgeon
Diagnose, examine and treat patients, suture, splinting, casting and prescribing medicine $
6-8 years school
pumping blood into the medical field

39. Plastic Surgeon
Medical specialty that uses surgical / non-surgical techniques to change appearance and function of the body
Functionally reconstructive or cosmetic enhancements
Burns, traumatic injuries, congenital abnormalities (cleft lip), removal of cancers, mastectomy- reconstructive
8 years school + residency + specialization
$90, a year