Ch. 7.3 Integumentary System Key Terms
What is Albino
A person with an absence of color pigments
What is Cyst
A closed sac with a distant membrane that develops abnormally in a body structure; usually filled with a semisolid material
What is Hypodermis
The inner most layer. It is made of elastic and fibrous connective tissue and fatty tissue and connects the skin to underlying muscles.
What is Papules
Firm, raised areas such as pimple and the eruptions seen in some stages of chickenpox and syphilis
What is Ulcer
A deep loss of skin surface that may extend into the dermis; may cause periodic bleeding and the formation of scars.
What is Alopecia
Baldness, a loss of hair on the scalp
What is 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.
What is Integumentary System
Performs protection, sensory perception, body temperature regulation, storage, Absorption, excretion, and production. Two other parts of the system are hair and nails.
What is Pustules
Pus-filled sacs such as those seen in acne, or pimples.
What is Vesicles
Blisters, or fluid filled sacs, such as those seen in chickenpox
What is Constrict
To get smaller
What is Dilate
To get larger
What is Jaundice
A yellow discoloration of the skin. Can result in liver or gallbladder disease
What is Sebaceous Glands
Oil glands that usually open onto their follicles.
What is Wheals
Itchy, elevated areas with an irregular shape; hives and insect bites are examples.
What is Crusts
Areas of dried pus and blood, commonly called scabs
What is 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.
What is Macules
Flat spots on the skin, such as freckles.
What is Subcutaneous
The inner most layer. It is made of elastic and fibrous connective tissue and fatty tissue and connects the skin to underlying muscles.
What is Cyanosis
A bluish discoloration of the skin caused by insufficient oxygen
What is Erythema
A reddish color of the skin that can be caused by either burns or a congestion of blood in the vessel.
What is Melanin
A brownish black pigment, produced in the epidermis
What is Sudoriferous Glands
Coiled tubes that extend through the dermis and open on the surface of the skin at pores.