Integument Flashcards
physical protection from environmental hazards, thermoregulation, synthesis and storage of lipid reserves, excretion, synthesis of vitamin D3, sensory information, coordination of immune response to pathogens and cancers in skin
integumentary system
one side attached to basal membrane, one side open to environment;
avascular, non-neural, melanin, hemoglobin, carotene
epidermis
The ___ layer of the skin is avascular and non-neural.
epidermis
The pink hue of skin is the result of ___ in the blood.
hemoglobin
_____ are responsible for the brown pigmentation of skin.
melanocytes
The superficial layer of the epidermis is stratum _____.
stratified squamous
corneum
Stratum ____ is present only in the soles of the feet and the palms of the hands.
cushioning
lucidum
The stratum _____ in the epidermis attaches to the basement membrane.
germinativum
The stratum germinativum is the layer where most ___ occurs in the epidermis.
mitosis
true skin, vascular and neural supply, two layers
dermis
Accessory structures of the skin are imbedded in the ___.
dense irregular connective tissue
most deep layer of the dermis
reticular
The most superficial layer of the dermis is the ____ layer.
papillary
formed by orientation of collagen fibers in dermis, surgeons attempt to cut with lines because of benefits associated with healing
lines of cleavage
Fingerprints are formed by ____.
dermal ridges
produce hairs
hair follicles
The hair ___ is visible above the surface of the skin.
shaft
part of the hair NOT visible above the surface of the skin
hair root
when hairs stand up straight via contraction of arrector pili muscles
piloerection
Piloerection is activated by the ____.
arrector pili muscles
glands that empty product via duct,
assist in thermoregulation, excrete waste, lubricate epidermis
exocrine glands
secrete oily lipid (sebum) that coats hair shaft and follicles
sebaceous glands
glands that secrete sebum into hair follicle
follicular sebaceous glands
Hair follicles are associated with ___ glands that produce oil.
follicular sebaceous