chapter 7.3 terms
what is Albino?
A person with an absence of color pigments. An albino's skin has a pinkish tint and the hair is pale yellow or white. The person's eyes also lack pigment and are red and very sensitive to light.
what are Alopecia?
Baldness, which is a loss of hair on the scalp.
Crusts
Areas of dried pus and blood, commonly called scabs
Dilate
To get larger (referring to blood vessels in the skin, allowing excess heat from the blood to escape).
what is a Cyst?
A closed sac with a distinct membrane that develops abnormally in a body structure; usually filled with a semisolid material.
Cyanosis
A bluish discoloration of the skin caused by insufficient oxygen.
Hypodermis
The innermost layer of the skin, also called the subcutaneous fascia. It is made of elastic and fibrous connective tissue and adipose (fatty) tissue and connects the skin to underlying muscles.
what is the definition for Dermis?
Also called corium, or "true skin." 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.
Macules
(Macular rash) flat spots on the skin, such as freckles.
Pustules
Pus-filled sacs such as those seen in acne, or pimples.
Ulcer
A deep loss of skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars.
definition of Melanin?
A brownish black pigment that is produced in the epidermis by specialized cells called melanocytes; it is responsible for basic skin color.
Vesicles Blisters
, or fluid-filled sacs, such as those seen in chickenpox.
what is Subcutaneous?
Referring to the subcutaneous fascia or hypodermis, the innermost layer of skin.
Jaundice
A yellow discoloration of the skin that can indicate bile in the blood as a result of liver or gallbladder disease.
Integumentary System
The skin; it covers more than 3,000 square inches of surface area and accounts for about 15 percent of total body weight in an average adult.
Papules
(Papular rash) firm, raised areas such as pimples and the eruptions seen in some stages of chickenpox and syphilis.
Epidermis
The outermost layer of skin. This layer is made of five smaller layers but no blood vessels or nerve cells.
Constrict
To get smaller (referring to blood vessels in the skin, which retains heat in the body)
what are Wheals?
Itchy, elevated areas with an irregular shape; hives and insect bites are examples.
I don't know what this means help me out by giving me a definition of Sebaceous Glands?
Oil glands that usually open onto hair follicles. They produce sebum, an oil that keeps the skin and hair from becoming dry and brittle.
Sudoriferous Glands Sweat glands.
They are coiled tubes that extend through the dermis and open on the surface of the skin at pores, eliminating perspiration.
what is Erythema?
A reddish color of the skin that can be caused by either burns or a congestion of blood in the vessels.