Ch. 7.3 Integumentary System Key Terms
A person with an absence of color pigments
Albino
a closed sac with a distinct membrane that develops abnormally in a body structure; usually filled with a semisolid material
Cyst
the innermost layer of skin, made of elastic and fibrous connective tissue and adipose tissue and connects the skin to underlying muscles
Hypodermis
(papular rash) firm, raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis
Papules
A deep loss of skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars
Ulcer
baldness, a loss of hair on the scalp
Alopecia
also called corium or “true skin”, layer has a framework of elastic connective tissue and contains blood vessels, lymph vessels, nerves, involuntary muscle, sweat and oil glands, and hair follicles
Dermis
skin, accounts for about 15 percent of total body weight
integumentary system
pus-filled sacs such as those seen in acne, or pimples
Pustules
blisters, or fluid-filled sacs, such as those seen in chickenpox
Vesicles
get smaller, when the blood vessels do this, the heat is retained in the body
Constrict
get larger, when blood vessels do this, excess heat from the blood can escape through the skin.
Dilate
a yellow discoloration of the skin, can indicate bile in the blood as a result of liver or gallbladder disease
Jaundice
oil glands that usually open onto hair follicles, produce sebum (antibacterial and antifungal)
sebaceous glands
itchy, elevated areas with an irregular shape; hives and insect bites are examples
Wheals
a collection of dried serum and cellular debris
Crusts
the outermost layer of skin, made of five smaller layers but no blood vessels or nerve cells
Epidermis
(macular rash) flat spots on the skin, such as freckles
Macules
situated or applied under the skin, referring to the layer of fatty tissue just beneath the epidermis
Subcutaneous
a bluish discoloration of the skin caused by insufficient oxygen
Cyanosis
a reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels
Erythema
a brownish black pigment produced in the epidermis by specialized cells called melanocytes
Melanin
sweat glands, coiled tubes that extend through the dermis and open on the surface of the skin at pores
sudoriferous glands