Ch. 7.3 Integumentary System
Albino
A person with an absence of color pigments
Cyst
A closed sac with a distant membrane that develops abnormally in a body structure; usually filled with a semisolid material
Hypodermis
The inner most layer. It is made of elastic and fibrous connective tissue and fatty tissue and connects the skin to underlying muscles.
Papules
Firm, raised areas such as pimple and the eruptions seen in some stages of chickenpox and syphilis
Ulcer
A deep loss of skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars.
Alopecia
Baldness, a loss of hair on the scalp
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.
Integumentary System
Performs protection, sensory perception, body temperature regulation, storage, Absorption, excretion, and production. Two other parts of the system are hair and nails.
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 result in liver or gallbladder disease.
Sebaceous Glands
Oil glands that usually open onto their follicles.
Wheals
Itchy, elevated areas with an irregular shape; hives and insect bites are examples.
Crusts
Areas of dried pus and blood, commonly called scabs
Epidermis
The outermost layer of skin. This layer is actually made of five smaller layers but no blood vessel or nerve cells. Two main layers are the stratum corner, the innermost layer. The cells of the stratum cornea are constantly shed and replaced by new cells from he stratum germinative.
Macules
Flat spots on the skin, such as freckles.
Subcutaneous Fascia
The inner most layer. It is made of elastic and fibrous connective tissue and fatty tissue and connects the skin to underlying muscles.
Cyanosis
A 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 vessel.
Melanin
A brownish black pigment, produced in the epidermis
Sudoriferous Glands
Coiled tubes that extend through the dermis and open on the surface of the skin at pores.