Exam 2 module 3 part 5 Flashcards
Skin and Wound Healing Ch 32
What is skin integrity?
The preservation of all layers of the skin being intact.
What is a wound?
A disruption in the normal skin integrity.
How are skin integrity and wounds related?
They are opposites.
What factors affect skin integrity?
Factors include age and mobility.
What is the epidermis?
The outer portion of the skin.
How many layers does the epidermis have?
Four or five layers.
What is the stratum corneum?
The outermost layer of the epidermis composed of dead cells.
What is the function of the stratum corneum?
It restricts water loss and prevents fluids, pathogens, and chemicals from entering the body.
What is the stratum germinativum?
The innermost layer of the epidermis that produces new cells.
What are keratinocytes?
Protein-containing cells in the dermis that provide strength and elasticity to the skin.
What do melanocytes produce?
Melanin, a pigment that gives skin its color.
What is the function of Langerhans cells?
To phagocytize foreign material and trigger an immune response.
Where is the dermis located?
Below the epidermis and above the subcutaneous tissue.
What type of tissue is the dermis made of?
Irregular fibrous connective tissue.
What structures are found within the dermis?
- Sweat glands
- Sebaceous (oil) glands
- Ceruminous (wax) glands
- Hair and nail follicles
- Sensory receptors
- Elastin
- Collagen
What is the subcutaneous tissue composed of?
Connective and adipose tissue.
What are the functions of the subcutaneous layer?
- Provides insulation
- Offers protection
- Serves as a reserve of calories
What influences the distribution of subcutaneous tissue?
- Sex hormones
- Genetics
- Age
- Nutrition
True or False: Age does not affect skin integrity.
False
Fill in the blank: The _______ is the outermost layer of the epidermis.
stratum corneum
Fill in the blank: The _______ layer is composed primarily of connective and adipose tissue.
subcutaneous
What is vernix caseosa?
A creamy substance that protects an infant’s skin
Vernix caseosa varies in amount at birth
How does an infant’s skin differ from an adult’s skin?
Thinner and more permeable
This predisposes infants to skin breakdown, such as diaper rash
What developmental aspect of infants affects thermoregulation?
Underdeveloped subcutaneous layer and sweat glands
Infants must be swaddled to maintain body heat