Chapter 5- Integumentary System Flashcards
The layers of the epidermis where mitotic divisions are the…
Basale and spinosum
The epidermis consist of a…
Simple squamous epithelium
Differences in skin color between individuals reflect distinct…
Levels of melanin synthesis
The basic factors interacting to produce skin color are…
Circulatory supply and pigment concentration and composition
Excessive exposure of the skin to UV radiation may cause redness, edema, blisters, and pain. The presence of blisters classifies the burn as…
Second degree
When exposed to ultraviolet radiation, epidermal cells in the stratum basale and stratum spinosum convert a cholesterol-related steroid into…
Vitamin D3
The hormone essential for the normal absorption of calcium and phosphorus by the small intestine is…
Calcitriol
Epidermal growth factor EF has widespread effects on epithelia tissue in that it…
- Promotes the divisions of germinative cells
- Accelerate the production of keratin
- Stimulates epidermal development and repair
The two major components of the dermis are…
A papillary layer and a reticular layer
What identifies what the dermis contains to communicate with other organ systems?
Nerve fibers
The primary tissues comprising the hypodermis are…
Areolar and adipose
The reason the hypodermis is a good location for subcutaneous injection by hypodermic needle is that it has a…
Limited number of capillaries and no vital organs
An important function of the subcutaneous layer is to…
Stabilize the position of the skin in relation to underlying tissues
Special smooth muscles in the dermis that, when contracted, produce “goose bumps” are called…
Arrector pili
Hair production occurs in the…
Hair follicle, in the hair matrix
The natural factor responsible for varying shades of hair color is…
Type of pigment present
Accessory structures of the skin include the…
Hair follicles, sebaceous gland, and sweat gland
Sensible perspiration released by the eccrine sweat glands serves to…
- Cool the surface do the skin
- Reduce body temperature
- Dilute harmful chemicals
When the body temperature becomes abnormally high, thermoregulatory homeostasis is maintained by a(n)…
Increase in sweat gland activity and blood flow to the skin
Not visible from the surface, nail production occurs at an epithelial fold called the…
Nail root
The immediate response by the skin to an injury is…
Bleeding and an inflammatory response triggered by damaged mast cells
The practical limit to the healing process of the skin is the formation of inflexible, fibrous, noncellular…
Scar tissue
Hair turns gray or white due to…
Decreased melanocyte activity
Sagging and wrinkling of the integument occurs from…
A decrease in the elastic fiber network of the dermis
