Ch. 7.3 Integumentary System Key Terms
Albino
A person with an absence of color pigments
Alopecia
Baldness;loss of hair on scalp
Constrict
get smaller
Crusts
Areas of dried pus and blood, commonly called scabs
Cyanosis
A bluish discoloration of the skin caused by insufficient oxygen
Cyst
A closed sac w a distant membrane that develops abnormally in a body structure, usually filled with a semisolid material
Dermis
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. The top of the dermis is covered with papillae, which fit into ridges on the stratum germinative of the epidermis.
Dilate
get larger
erythema
a reddish color of the skin that can be caused by either burns or a congestion of blood in the vessel
hypodermis
The inner most layer. It is made of elastic and fibrous connective tissue and fatty tissue and connects the skin to underlying muscles.
integumentary system
Performs protection, sensory perception, body temperature regulation, storage, Absorption, excretion, and production. Two other parts of the system are hair and nails.
jaundice
a yellow discoloration of the skin; can result in liver or gallbladder disease
macules
flat spots on the skin, such as freckles
melanin
a brownish black pigment produced in the epidermis
papules
Firm, raised areas such as pimple and the eruptions seen in some stages of chickenpox and syphilis
sebaceous fascia
coiled tubes that extend through the dermis and open on the surface of the skin at pores
ulcer
a deep loss of skin surface that may extend into the dermis, may cause periodic bleeding and the formation of scars
vesicles
Blisters, or fluid filled sacs, such as those seen in chickenpox
wheals
Itchy, elevated areas with an irregular shape; hives and insect bites are examples.