SKINNY ON SKIN

Integumentary system The integumentary system is the largest organ of the body It is a membrane because it covers the body It is called a system because it has organs and other parts that work together for a particular function

Layers of the skin Epidermis: this is the outer-most layer of the skin The main layer is the stratum corneum- this is where cells constantly shed and Stratum germinativum- provides cells to replace the cells in the strata corneum

Skinny on skin Layer #2 the Dermis Also called the cornium or true skin It contains blood vessels, lymph vessels, nerves, involuntary muscle, sweat and oil glands and hair follicles

Skinny on Skin The top of the dermis is covered in papillae A. Fits into ridges on the stratum germinativum of the epidermis B. Ridges form lines or striations on the skin C. Pattern of ridges is unique for each individual- this is you fingerprint or foot print used for ID

Skinny on Skin Layer #3 is the fascia or hypodermis This is the innermost layer of skin It is made from elastic and fibrous connective tissue and adipose tissue (fatty tissue) It connects skin to the underlying muscles

Skinny on Skin Glands of the skin: Sudoriferous glands- sweat glands These are coiled tubes that extend through the dermis They eliminate sweat that contains water, salts and body waste

Skinny on Skin Gland #2 Sebaceous glands- these are oil glands They usually open to a hair follicle They produce oil called sebum Sebum is important to keep hair from becoming dry and brittle Blackheads and pimples occur when an oil gland becomes plugged with dirt and oil

Skinny on Skin Other parts of the integumentary system: Hair Hair consists of a root that grows in a hollow tube called a follicle and a hair shaft Protects the body Covers all surfaces of the body except for palms of hands and soles of the feet Certain conditions cause people to loose hair called alopecia or baldness- genetic condition for hair loss on the scalp

Skinny on Skin Nails Protect the fingers and toes from injury Nails are made of keratinized epidermal cells which are packed closely together to form a thick dense surface Nail cells are formed in a nail bed Cells will regrow if lost if nail bed is not damaged

Functions of the integumentary systems 1. protection- it is a barrier for ultraviolet rays from the sun Protects against pathogens or germs Holds moisture in and prevents deeper tissues from drying out

Skinny on Skin 2. sensory perception Nerves are present in the skin Responds to pain, pressure, temperature, and touch

Skinny on Skin 3. regulation of body temp- Blood vessels in the skin help the body to retain or lose heat If blood vessels dilate or get larger, they allow excess heat to escape through the skin If blood vessels constrict, they get smaller and retain heat Sudoriferous glands help cool the skin through the evaporation of sweat

Skinny on Skin 4. storage Skin has tissues for temporary storage of fat, glucose ( sugar) water vitamins and salts. Skin stores adipose tissue (fat) in the subcutaneous connective tissue, which is a source of energy

Skinny on Skin 5. absorption- certain substances can be absorbed through the skin like medications for pain, motion sickness, heart medication and nicotine patches to stop smoking

Skinny on Skin 6. excretion Skin helps the body eliminate salt , waste and water

Skinny on Skin 7. production Skin can help produce vitamin D. It uses ultraviolet rays from the sun to form an initial molecule of Vit. D that matures in the liver

Skin color Skin color or pigmentation is inherited and determined by pigments in the epidermis Melanin: 1. Absorbs ultraviolet light to darken the skin 2. Small concentrated areas of melanin pigment form freckles

Skin color Albino- the absence of color pigment Skin might have a pinkish tint Hair can be yellow or white Eyes are red in color and very sensitive to light

albinism

Abnormal colors Erythema- caused by burns or blockage of a blood vessel Red color See picture…..

erythema

Abnormal colors Jaundice- yellowish discoloration caused by the presence of bile in the blood as a result of liver or gallbladder disease. Also can be seen in diseases that destroy red blood cells See picture……..

jaundice

Abnormal color Cyanosis- a bluish discoloration caused by insufficient oxygen, associated with heart, lung and circulatory diseases See pic……

Abnormal color Vitiligo A loss of pigment in certain areas, usually seen in autoimmune diseases like hashimoto’s thyroid See pic……

vitiligo

tell your table buddy who had vitiligo and was called the king of pop

Abnormal color Bruising- Also called ecchymosis Happens when blood escapes and clots beneath the skin Hematoma- swollen hard bruised area Can be seen with hemophilia patients

Skin injuries Sun damage Clumps elastin fibers which leads to leathery skin Can lead to a temporary depression of the immune system Can cause DNA alteration which can lead to skin cancer See pic of melanoma……….

melanoma

Skin injury Sun types: Type 1- always burns needs spf 30 Type 2- always burns easily tans minimally fair skin needs spf 30-15 Type 3- burns moderately, tans gradually, fair to medium skin- spf 30-15 Type 4 burns minimally always tans well, medium skin needs spf 30-15-8 Type 5- rarely burns tans easily olive or dark skin spf 15-8 Type 6- never burns, very dark skin spf 8

Skin eruptions Macules- macular rash Flat spots on the skin Example : flat spots involved with disease (5th’s disease, or Rocky Mountain spotted fever) See pic….

macular

Skin eruptions Papules- papular rash These are firm raised areas Examples are chicken pox See pic…..

papular

Skin eruptions Vesicles- these are blisters or sacs full of fluid Sometimes seen with herpes patients

vesicles

Skin eruptions Pustules- sacs filled with pus Example: pimples or acne

Skin eruptions Crust- or scabs These are dried areas of pus or blood

Skin eruptions Wheals- itchy elevated areas as seen with hives or insect bites See pic…..

wheals

psoriasis Patchy erythema and scales This can be from chronic inflammatory disease- genetic See pic……

psoriasis

Skin eruptions Impetigo: Very contagious Erythema, vesicles with a sticky yellow crust Infection with strep

impetigo

Skin eruptions warts Painless except for plantar warts Caused by a virus Can also be venereal HPV- there is a vaccine to help with several of the strains- very contagious

warts

Skin eruptions Herpes simplex I- These are cold sores can be spread through kissing or sharing objects such as toothbrushes or eating utensils or general illness (from mild illnesses to serious conditions)fatigue, physical or emotional stress Blisters that are inflamed around the mouth Viral, no cure, contagious

Herpes simplex I

Skin eruptions Herpes zoster- shingles after chickenpox Viral infection with fever and malaise Vesicles run along nerve pathways, will only see shingles on one side If you had chicken pox, the virus can lie dormant in the nerve root, and in times when the body is stressed, it can flare up

Herpes zoster

Skin eruptions tinea-dermatophytosis Fungal infection, including athlete’s foot, ringworm, jock itch It is infectious and contagious antifungal medications

tinea

Skin eruptions Furuncles (boils) carbuncles (large swollen erythematous lesions) Can be caused by staph or strep infections May need surgical intervention

carbuncle

Skin eruptions Ulcers- deep loss of skin that may extend to the dermis Decubitis - on or over boney prominences, can also be called bed sores Can be staged: Stage I- redness, firm, heat, intact skin Stage II – blister or open area can be through the dermis Stage III- open to the fascia Stage IV- full thickness down through muscle or bone

Pressure ulcer stage I

Pressure ulcer stage II

Pressure ulcer stage III

Pressure ulcer stage IV

Skin eruptions Paronychia- this is an infected hangnail

paronychia

Skin eruptions Sebaceous cyst- blockage of duct of a sebaceous gland

Sebaceous cyst

Skin eruptions Diaper rash- can be dark red areas Can have swelling Will have irregular borders and usually irritated where the diapers are more constricting

Diaper trash- jk rash

Other skin considerations Venomous bites-brown recluse Area will become necrotic (dark purple to black) and begin to slough Causes skin to erode and for an open wound Many people mistake MRSA for spider bites See pic…..

Brown recluse

MRSA Methicillin Resistant Staphylococcus Aureaus A staph infection from the staph aureus bacteria that has become resistant to Methicillin antibiotics Very contagious spread by contact- use precautions

MRSA

Body lice Body lice are parasitic insects that live on clothing and bedding used by infested persons. Body lice frequently lay their eggs on or near the seams of clothing. Body lice must feed on blood and usually only move to the skin to feed.

BODY LICE

scabies Human scabies is caused by an infestation of the skin by the human itch mite The microscopic scabies mite burrows into the upper layer of the skin where it lives and lays its eggs. The most common symptoms of scabies are intense itching and a pimple-like skin rash. The scabies mite usually is spread by direct, prolonged, skin-to-skin contact with a person who has scabies prescription lotion

scabies

burns First degree- This means a superficial burn. The surface of the skin is damaged, but the epidermis is still intact, and therefore able to perform its functions (control temperature and protect from infection or injury)

Burns 2nd degree: This means damage that has extended through the epidermis and into the dermis . Second-degree burns also are known as partial-thickness burns. The presence of second degree burns indicates a loss of skin function. Blisters are the first sign of a second-degree burn. As the epidermis is destroyed, it begins to separate from the dermis.

Burns Third degree or full thickness: This indicates the burn has destroyed both the epidermis and dermis. The victim has the same trouble with fluid loss, heat loss, and infection. Full-thickness burns also cause nerve death, so the victim may not be able to feel anything in the area of the burn.

Burns Rule of nines: You can estimate the body surface area on an adult that has been burned by using multiples of 9. An adult who has been burned, the percent of the body involved can be calculated as follows: Head = 9% Chest (front) = 9% Abdomen (front) = 9% Upper/mid/low back and buttocks = 18% Each arm = 9% Groin = 1% Each leg = 18% total (front = 9%, back = 9%) As an example, if both legs (18% x 2 = 36%), the groin (1%) and the front chest and abdomen were burned, this would involve 55% of the body.

3rd degree burn or full thickness

How would you use the rule of 9's to determine % of surface area burned in a patient with burns on the face, chest and front of one arm.

Exit ticket Develop a plan, using 3 simple things, to prevent pressure sores from happening in bed-bound patients.