Ch. 7.3 Integumentary System Key Terms
Albino
Person with the absence of color pigments
Alopecia
Baldness; loss of hair on the scalp
Constrict
Become narrower or squeeze
Crutus
Areas of dried pus and blood, commonly called scabs
Cyanosis
Bluish discoloration of the skin due to insufficient oxygen
Cyst
Closed, sac like pocket in the body containing fluid, air or other soft materials
Dermis
True skin; corium; framework of elastic connective tissues containing blood vessels, lymph vessels, nerves, involuntary muscle, sweat and oil glands, hair follicles
Dilate
Widen or enlarge a body part or an opening
Epidermis
Outermost layer of the skin
Erythema
Reddish color of the skin caused by burns or congestion of blood in vessels
Hypodermis
Innermost layer of skin
Integumentary System
skin
Jaundice
Yellow discoloration of the skin indicating bile in the blood
Macules
Flat spots on the skin like freckles
Melanin
Brownish black pigment produced in epidermis by special cells: melanocytes
Papules
Firm, raised areas such as pimples and the eruptions of some stages of chickenpox and syphilis
Pustules
Pus filled sacs such as those in acne or pimples
Sebaceous glands
Oil glands that are usually open onto hair follicles; produce sebum
Subcutaneous
Innermost layer of skin made of elastic and fibrous connective tissue and adipose (fatty) tissue and connects the skin to underlying muscles
Sudoriferous Glands
Sweat glands; coiled tubes that extend through the dermis and open on the surface of skin at pores
Ulcer
Deep loss of skin surface may extend into the dermic; may cause periodic bleeding and formation of scars
Vesicles
Blisters, or fluid filled sacs, like those in chickenpox
Wheals
Itchy, elevated areas with an irregular shape; Ex: hives and insect bites