Ch. 7.3 Integumentary System Key Terms
Albino
A person with an absence of color pigments; the skin has a pinkish tint and the hair is pale yellow or white
Constrict
to get smaller
Ulcer
a deep loss of skin surface that may extend into the dermis
Cyanosis
a bluish discoloration of the skin caused by insufficient oxygen
Melanin
a brownish black pigment produced in the epidermis by specialized cells called melanocytes
Erythema
a reddish color of the skin that can be caused by burns or a congestion of blood in the vessels
Subcutaneous
pertaining to the layer under the skin
Vesicles
blisters, or fluid-filled sacs such as those seen in chickenpox
Dilate
to get larger
Crusts
areas of dried pus and blood, called scabs
Wheals
itchy, elevated areas with an irregular shape
Macules
flat spots on the skin, such as freckles
Jaundice
a yellow discoloration of the skin that can indicate bile in the blood as a result of liver or gallbladder disease
Papules
firm, raised areas on the skin, such as pimples and eruptions seen in some stages of chicken pox
Hypodermis
the innermost layer of the skin, made of elastic and fibrous connective tissue and adipose
Integumentary system
composed of skin, hair, nails
Pustules
pus-filled sacs such as those seen in acne, or pimples
Alopecia
a medical term for baldness with a loss of hair on the scalp
Cyst
a closed sac with a distinct membrane that develops abnormally in a body structure
Epidermis
the outermost layer of skin, made of five small layers, but no blood vessels or nerve cells
Sudoriferous glands
sweat glands that eliminate perspiration to remove access and water and cool the body
Dermis
also called corium or true skin that contains blood vessels, nerves, glands, and hair follicles
Sebaceous glands
oil glands that produce sebum