Chapter 7.3 Key Terms
albino
A person with an absence of color pigments
cyst
a closed sack or pouch containing soft or semisolid material.
hypodermis
the innermost layer.
papules
firm, raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis
ulcer
an open lesion of skin or mucous membrane, resulting in tissue loss
alopecia
baldness, a loss of hair on the scalp
dermis
corium, or "true skin.
integumentary system
skin
pustules
pus-filled sacs such as those seen in acne, or pimples
vesicles
blisters, or fluid-filled sacs, such as those seen in chickenpox
constrict
get smaller
dilate
get larger
jaundice
a yellow discoloration of the skin, can indicate bile in the blood as a result of liver or gallbladder disease
sebaceous glands
oil glands that usually open onto hair follicles
wheals
itchy, elevated areas with an irregular shape; hives and insect bites are examples
crusts
areas of dried pus and blood, commonly
epidermis
the outermost layer of skin
macules
flat spots on the skin, such as freckles
subcutaneous
the innermost layer.
cyanosis
bluish discoloration of the skin caused by insufficient oxygen
erythema
a reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels.
melanin
A brownish black pigment
sudoriferous glands
sweat glands