Exam 3 Health Assessment Ch 9 Flashcards
Concepts interrelated to tissue integrity
perfusion, oxygenation, nutrition, motion, tactile sensory perception, elimination, and pain
Skin and accessory structures
hair, nails, sweat glands, and sebaceous glands
Primary functions of skin
protection (external and internal), retain body fluids and electrolytes, sensory input, temperature regulation, production of vitamin D, excretion of sweat, urea, and lactic acid, expression of emotion (blushing), and repair of its own wounds
three layers of skin
Epidermis, dermis, and hypodermis
The epidermis
outer layer of stratified squamous epithelium.
Avascular
Deepest layer is stratum germinativum
30 days for cells to regenerate die and slough off
Melanocytes secrete
melanin, which provides pigment for the skin and hair
Dermis
Highly vascular layer of connective tissue
fibers that react to touch, pain, and temperature
1-4 mm thick
Hypodermis
Subcutaneous layer
support structure for the dermis and epidermis
loose connective tissue
fatty cells help retain heat, provide a protective cushion, and provide calories
what forms our hair
epidermal cells in the dermis
Each hair consist of
root, a shaft, and a follicle.
skin tissue adjacent to the nail
paronychium
Capillary refil
< 2 seconds
normal color of nails
pink
Eccrine sweat glands
Regulate body temperature by water secretion
most wide spread sweat gland on body
found in great numbers on hands and feet and forehead
Apocrine sweat glands
found in the axillae, nipples, areolae, anogenital area, eyelids and external ears.
begin secretion at puberty, strongly influenced by hormones.
decomposition of the apocrine sweat produced body odor
Sebaceous glands
lipid rich called sebum keeps skin lubricated
mostly in face and scalp
not found in palms and soles of feet
General health history
Present health status
past health history and family history
personal and psychosocial history
Problem based history
skin
hair
nails
The most commonly reported symptom of skin disease
pruritis