Ch. 7.3 Integumentary System Key Terms
has a pinkish tint, and the hair is pale yellow or white
Albino
a closed sack or pouch containing soft or semisolid material
Cyst
the innermost layer. It is made of elastic and fibrous connective tissue and adipose (fatty) tissue and connects the skin to the 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 have extended into the dermis; may cause periodic bleeding and the formation of scars
Ulcer
a loss of hair on the scalp
Alopecia
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
Dermis
skin and covers more than 3,000 square inches of surface area and accounts for about 15% of total body weight on an average adult
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
when blood vessels get smaller
Constrict
when the blood vessels get larger
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 and produce sebum, an oil that keeps the skin and hair from becoming dry and brittle
Sebaceous Glands
itchy, elevated areas with an irregular shape; hives and insect bites are examples
Wheals
areas of dried pus and blood, commonly called scabs
Crusts
the outermost layer of skin. This layer is actually made of five smaller layers, but no blood vessels or nerve cells.
Epidermis
(macular rash) flat spots on the skin, such as freckles
Macules
the innermost layer, and is made of elastic and fibrous connective tissue and adipose (fatty) tissue, and connects the skin to the underlying muscles
Subcutaneous
is a bluish discoloration of the skin caused by insufficient oxygen
Cyanosis
reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels.
Erythema
(brownish black pigment) produced in the epidermis by specialized cells called melanocytes
Melanin
or (sweat glands) are coiled tubes that extend through the dermis and open on the surface of the skin at pores
Sudoriferous glands