Module 3 Flashcards
Integ/o
To cover
Integument?
Covering membrane of the body
Metrics of the skin?
More than 3000 square inch of surface area; up to 6 lbs.
Functions of the skin (4)?
Protect the body,
regulate temperature ,
sense the surrounding environment, secretion
Ways that the skin exhibit protection (4)?
-Protects deeper tissue from pathogens
-prevent mechanical injury & excessive water loss
- store both food and water
-guard body from excessive UV rays from the sun.
Ways the skin regulate temperature rises?
- blood vessels in the dermis dilate when temperature rises, which allows more blood to be brought to skin and heat radiate out of skin.
- sweat glands will secrete more sweat to cool body.
Ways skin regulate temperature drops?
Blood vessels in the dermis constrict, keeping blood closer to the core of the body and converse more body heat.
How the skin practices sensation?
Skin sense environment through nerve endings that sense pain, touch, heat, cold, and pressure.
- nerve travels to the brain and provoked a response to the signal.
How the skin exhibits secretion?
Secretes substances through sweat and sebaceous glands
Two types of glands on the skin?
Sebaceous glands and sweat glands
Purpose of sweat glands? What is sweat made out of?
Cool the body
- water, salt, and waste
Purpose of sebaceous glands?
Secrete sebum to protect skin from dehydration.
Layers of the skin?
Epidermis
Dermis
Subcutaneous layer (hypo dermis)
What are the 5 layers of the epidermis?
Stratum corneum
Stratum lucidum
Stratum granulosum
Stratum spinosum
Stratum germinativum
can lemurs get some bamboo
What epidermis layer are new skin cells generated?
Stratum germinativum
What epidermis layer is melanocytes found?
Stratum germinativum
Function of Stratum germinativum
-
-Site where basal cells exhibit mitosis to create keratinocytes to be pushed to upper layers of the epidermis
- melanocytes create melanin to be carried through melanosomes
- contain merkel cells which aid in the nervous system.
Function of Stratum spinosum?
-Contain keratin cells pushed from the germinativum layer.
-Contain Langerhan cells which function to protect the skin from invading pathogens
Cells that attack foreign invaders in the epidermis?
Langerhan cells ( found in the Stratum spinosum)
Function of Stratum granulosum and lucidum
Contain keratin cells
- lucidum layer only in thick skin areas; contain thin clear protein (eleidin protein)
Function of Stratum Corneum?
Superficial layer that is made of dead cornified keratin skin cells.
Functions to protect the deeper layers.
What is keratin?
Protein that help cells be tough and water resistant
- forms hair, nails, and the thick skin of the palms and soles
Function of the dermis layer
Protects deeper layers, Thermo regulation, and aids in sensation.
What is dermis layer made out of?
- connective tissue
-also nerve, nerve endings , blood vessels, sebaceous and sweat glands, elastic fibers, hair follicles and lymphatics
7 types of skin lesions
Macule
Wheal
Papule
Vesicle
Pustule
Ulcer
Fissure
Definition of macule and example?
Flat discolored spot on the skin
Ex. Mole
Definition of wheal and example
Localized temporary elevation of the skin that is itchy and irregular.
Ex. Hives or urticaria
Definition of papule and example?
Solid, confined and elevated area in the skin.
Ex. Pimple
Definition of vesicle and example?
Small fluid filled sac
Ex. Blister
Definition of pustule and example?
Small elevated confined lesion filled with pus.
Ex. Pimple
Definition of ulcer?
Erosion or eating away of healthy tissue.
Definition of fissure?
Crack like slit that extends through the epidermis into the dermis.
Parts of the hair?
Hair follicle
Hair root
Hair shaft
Arrector pili muscle
Hair root
Embedded into the hair follicle
Hair shaft
Part of the hair that is visible
Arrector pili muscle function?
Attaches to the hair follicle and keeps hair erect.
- the muscle contracts when the skin is cooled; goosebump reaction.
Changes to hair with age?
Less melanin, thinning on scalp, texture.
Male: more hair in ears, nose, and eyebrow
Female: hormonal changes that can increase facial hair.
What is the nail made up of?
Hard keratin that covers ends of hair and toes.
Nail made up of nail body and nail root
Terms pertaining to the nail (6)?
Nail body
Nail bed
Nail root
Eponychium
Lunula
Free edge
Nail body
Visible portion of the nail and covers the part of epidermis called the nail bed.
Nail bed
Epithelial tissue located deep to the nail body.
Pink in color due to blood vessels in this tissue
Nail root
Fold of epithelial tissue that is not visible
Eponychium
Small portion of epithelial fold that extends over the base of the nail body.
Cuticle
Lunula
Area at the base of the nail body that is lighter than the rest; due to compressed blood vessels by the nail body.
Free Edge
Top of the nail body
Description of the sebaceous gland?
-Oil secreting glands
-Opens into the hair follicle and secretes sebum, which lubricates hair and skin
-Amount of sebum Varys due to age, disease, puberty and pregnancy
Two types of sweat glands
Merocrine glands and Apocrine glands
Where does merocrine glands secrete?
Directly to the skin surface
-prevalent on sole of feet and palms of the hand
Where does apocrine glands secrete?
Into the hair follicles located in the axillae, nipples, and the groin
- begins during puberty
BCC
Basal cell carcinoma
BX
Biopsy
C&S
Culture and Sensitivity
Decub
Decubitus ulcer
Derm
Dermatology
HSV
Herpes Simplex Virus
I & D
Incision and Drainage
ID
Intradermal
MM
Malignant melanoma
PPD
Purified protein derivative
SCC
Squamous Cell Carcinoma
SG
Skin Graft
STSG
Split Thickness Skin Graft
Subq
Subcutaneous
Abrasion
Skin injury that scrapes away surface of skin
Abscess
Collection of puss in the skin
Albinism
Genetic condition where there is partial or complete absence of pigment in skin, hair and eyes.
Anhidrosis
Condition where pt is unable to sweat
Autograft
Graft taken from one part of the pt body and transferred to another part.
Avulsion
Part or structure of the body has been forcibly torn off body
Biopsy
Surgical procedure to remove part of tissue for further evaluation under a microscope.
Bulla
A large blister
Cauterization
Intentional destruction of tissue by a caustic chemical, electric current, laser, or freezing
Cyst
Fluid filled sac in the skin
Chemabrasion
Removal of superficial layer of skin using chemicals
Comedo
Blackhead
Contusion
Blunt trauma to the skin that results in bruising without a break in the skin
Cryosurgery
Use by extreme cold to freeze and destroy tissue
Culture and Sensitivity
Lab test used to determine specific bacteria causing an infection and it’s sensitivity to antibiotics
Debridement
Removal of foreign material dead and/or damage tissue from a wound.
Dehiscence
Complication of wound healing where edge of wound reopen and separate
Dermabrasion
Scraping the skin with sandpaper or rotating wire brushes
Erythema
Redness of the skin
Eschar
Scab, slough
Exudate
Oozing of pus or serum
Keloid
A thick and raised scar caused by excessive collagen formation
Laceration
Wound in the skin with a jagged edge, typically caused by trauma
Lesion
General term for Abnormality in the skin
Necrosis
Area of tissue death
Nevis
Pigmented skin blemish, birthmark, or moles
Nodule
Solid or raised area of skin cells
Onychia
Inflamed nail bed
Petechiae
Flat pinpoint purplish spots from bleeding that is underneath the skin
Pruritus
Severe itching
Purpura
Bruises that occur in older adults with thin easily damaged skin.
Pyogenic
Producing pus
Seborrhea
Oil discharge from sebaceous gland
Skin graft
Transfer of healthy skin to cover another damaged area.
Trichophagia
Hair eating
Urcticaria
Skin eruption of pale reddish wheals, with severe itching
Also called hives
Ungal
Pertaining to the nail
Acr/o
Extremity
Aden/o
Gland
Albin/o
White
Ang/i
Vessel
Caus/o
Burn/burning
Cellul/o
Little cell
Cutane/o
Skin
Derm/a
Skin
Dermat/o
Skin
Erythr/o
Red
Follicul/o
Little bag
Hidr/o
Sweat
Icter/o
Jaundice
Integument/o
A covering
Kel/o
Tumor
Kerat/o
Horn
Leuk/o
White
Melan/o
Black
Myc/o
Fungus
Oncych/o
Nail
Pachy/o
Thick
Pedicul/o
A louse
Plak/o
Plate
Prurit/o
Itching
Rhytid/o
Wrinkle
Scler/o
Hardening
Seb/o
Oil
Therm/o
Hot; heat
Trich/o
Hair
Vuls/o
To pull
Xanth/o
Yellow
Xer/o
Dry
Acne
Inflammation of the sebaceous gland and hair follicles that result in pustules and papules.
- common in teenagers
Acne rosacea
Chronic acne in adults
- red rash, tiny pimples, and broken blood vessels develop
- typically on cheeks and nose
Alopecia
Loss of hair
Alopecia areata
Hair loss in defined patches
Androgenic alopecia
Hair loss resulting from aging
-begins in frontal area of the scalp and proceeds toward the back