careers and healthcare integumentary system study guide

What covers over 3000 square inches of the body surface

Skin

Integumentary system consists of

Hair,skin,nails

Outermost layer of skin

Epidermis

True skin

Dermis

What is the medical term for sweat glandes

Sudoriferous glandes

Sweat is made up of

Water,salt,and body waste

Oil glandes are

Sebaceous glands

We do not have any on palms of hands or soles of feet

Hair

7 skin functions

1. Protection- a barrier from the sun and germ invasion. + it holds moisture so dep tissue dosen’t dry out

2. Sensory perception- nerves in skin help the body to respond to pain,pressure,temp, and touch

3. Body temperature regulation- hot blood vessels go close to the skin to cool down, cold blood vessels go more inside to get warm

4. Storage- stores fat,glucose,water,vitamins,and salts, uses fat as an energy source,

5. Absorption- substances can be absorbed like medication (transdermal) motion sickness, nicotine, heart patterns

6. Excretion- help eliminate, salt, small amounts of waste, and heat through perspiration

7. Production- helps produce vitamin D using the sun and the vitamin D matures in the liver preventing the condition called rickets

We all have the same number of these

Melanocytes-genes

Person without color pigment

Albino

Baldness or hair loss

Alopecia

Reddish color to skin caused by burns or congestion of blood vessels under the skin surface

Erythema

Bluish/gray discoloration of skin from insufficient O2

Cyanosis

Flat spots on skin like freckles

Macules

Itchy elevated area with irregular shapes like hives

Wheals

Blisters or fluid filled sacs

Vesicles

Areas of dried blood or pus like scabs

Pustulesans crust

Inflammation of sebaceous or oil glands

Acne vulgaris

This is the most dangerous of skin cancers

Melanoma

This is a contagious fungal infection of the feet

Athletes foot

This skin cancer is described as sores that don’t heal

Squamous cell carcinoma

Causes of skin cancer

1. Sun exposure

2. Prolonged use of tanning beds

3. Irritating chemicals

4. Radiation

This skin disease is caused by human papilloma virus or HPV

Warts

This skin condition is a non contagious skin disease with periods of exacerbation and remission

Psoriasis

Non contagious inflammatory dermatitis caused by irritants or allergen (diet,soap)

Eczema

Highly contagious skin infection caused by staph or strep organisms

Impetigo

The ABCDE method of melanoma

Asymmetry- if a line drawn through middle of lesion, the lesion halves are unequal

Borders- ragged edges, common moles have smooth borders

Color- multi color, moles usually have single brown shade

Diameter- size (pencil eraser or> ¼ inch) or darker than others

Evolving- any chance in size, shape, color, elevation, or any new symptom- bleeding or its