7.3 Integumentary System Key Terms
What is an albino?
person with an absence of color pigments
What is a cyst?
a closed sac with a distinct membrane that develops abnormally in a body structure
What is hypodermis?
the innermost layer of skin
What are papules?
firm raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis
What are ulcers?
open lesion of the skin or mucous membrane resulting in tissue loss
What is alopecia?
baldness, a loss of hair on the scalp
What is dermis?
also called corium or “true skin”
What is the integumentary system?
What are pustules?
pus filled sacs such as those seen in acne, or pimples
What are vesicles?
blisters, or fluid-filled sacs, such as those seen in chickenpox
What does constrict mean?
get smaller
What does dilate mean?
get larger
What is jaundice?
a yellow discoloration of the skin, can indicate bile in the blood as a result of liver or gallbladder disease
What are sebaceous glands?
oil glands that usually open onto hair follicles
What are wheals?
itchy, elevated areas with an irregular shape; hives and insect bites are examples
What are crusts?
areas of dried pus and blood, commonly called scabs
What is epidermis?
the outermost layer of skin
What are macules?
flat spots on the skin such as freckles
What is the subcutaneous fascia?
the innermost layer of skin
What is cyanosis?
bluish discoloration of the skin caused by insufficient oxygen
What is erythema?
reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels
What is melanin?
brownish black pigment produced in the epidermis by specialized cells called melanocytes
What are the sudoriferous glands?
coiled tubes that extend through the dermis and open on the surface of the skin at pores