Intengumentary System Flashcards
The layers of the epidermis deepest to moist outward is
basale, spinosum, granulosum, corneum
The layers of the epidermis where mitotic division occurs are the
basale and spinosum
The epidermis consists of (tissue)
stratified squamous epithelium
Difference 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 concentration
Blisters classify burns as
2nd degree
When exposed to ultraviolet radiation, epidermal cells in the stratum basale and stratum spinsoum 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 factors EF has widespread effects on epithelium tissue that it
promotes the division of germinative cells
accelerates the production of keratin
stimulates epidermal development and repair
The two major cmoneents of the dermis are
a papillary and reticular layer
The primary tissues comprising the hypodermis are
areolar and adipose tissue
The reason the hypodermis is a good location for subcutaneous injections 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 tissue
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 factors responsible for varying shades of hair color is the
number of melanocytes
amount of carotene production
type of pigment presented
Accessory structures in the skin include
hair follicles, sebaceous glands, and sweat glands
Sensible perspiration released by the eccrine sweat glands serves to
cool the surface of the skin
reduce body temperatures
dilute harmful chemicals
When the body temperature becomes abnormally high, thermoregulatory homeostasis is maintained by
increase in sweat gland activity and blood flow to the skin
Not visible from the surface, nail prediction 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
decrease in melanocyte activity
Sagging and wrinkling of the integument occurs from
a decrease in the elastic fiber network of the dermis
