CLASSWORK - Ch. 7.3 Integumentary System Key Terms
cyst
cyst: A closed sac with a distinct membrane that develops abnormally in a body structure; usually filled with a semisolid material.
alopecia
alopecia: Baldness, a loss of hair on the scalp.
hypodermis
hypodermis: (Also called subcutaneous fascia) The innermost layer of skin, made of elastic and fibrous connective tissue and adipose (fatty) tissue, which connects the skin to underlying muscles.
papules
papules: (papular rash) Firm, raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis.
ulcer
ulcer: A deep loss of skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars.
dermis
dermis: Also called corium, or "true skin." This layer has a framework of elastic connective tissue and contains blood vessels, lymph vessels, nerves, involuntary muscle, sweat and oil glands, and hair follicles.
albino
albino: A person with an absence of color pigments.
integumentary system
integumentary system: The skin.
pustules
pustules: Pus-filled sacs such as those seen in acne, or pimples.
vesicles
vesicles: Blisters, or fluid-filled sacs, such as those seen in chickenpox.
dilate
dilate: To get larger (in the context of blood vessels).
constrict
constrict: To get smaller (in the context of blood vessels).
jaundice
jaundice: A yellow discoloration of the skin, which can indicate bile in the blood as a result of liver or gallbladder disease.
sebaceous glands
sebaceous glands: Oil glands that usually open onto hair follicles and produce sebum.
wheals
wheals: Itchy, elevated areas with an irregular shape; hives and insect bites are examples.
epidermis
epidermis: The outermost layer of skin.
crusts
crusts: Areas of dried pus and blood, commonly called scabs.
macules
macules: (macular rash) Flat spots on the skin, such as freckles.
subcutaneous (fascia)
subcutaneous (fascia): The innermost layer of skin, made of elastic and fibrous connective tissue and adipose (fatty) tissue, which connects the skin to underlying muscles.
erythema
erythema: A reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels.
cyanosis
cyanosis: A bluish discoloration of the skin caused by insufficient oxygen.
melanin
melanin: A brownish black pigment produced in the epidermis by specialized cells called melanocytes.
sudoriferous glands: (Sweat glands)
sudoriferous glands: (Sweat glands) Coiled tubes that extend through the dermis and open on the surface of the skin at pores.