quiz #2 - integumentary system Flashcards
Keratinized stratified squamous epithelium composes the…
epidermis
Which pigment secreted by specialized cells in the skin is capable of absorbing ultraviolet light?
Melanin
In a skin infection, which cell will take up and process microbial antigens?
Intraepidermal macrophages (Langerhans cells)
Apoptosis of cells occurs within the…
stratum granulosum
Dense irregular connective tissue will be found in the…
dermis
This type of exocrine gland undergoes a higher rate of mitosis due to its holocrine secretion
Sebaceous gland
Which condition results from androgens inhibiting hair growth in genetically predisposed adults?
Male-pattern baldness
You stepped on a nail. List the sequential strata of the epidermis that the nail penetrated through to reach the dermis
Corneum, lucidum, granulosom, spinosum, basale
“Goose bumps” are caused by…
contraction of arrector pili muscles
When you are hot, blood vessels in the dermis _____ to maintain homeostasis
dilate
When you are cold, blood vessels in the dermis _____ to maintain homeostasis
constrict
Heat loss from the body will _____ when blood vessels in the dermis dilate
increase
Heat loss from the body will _____when blood vessels in the dermis constrict
decrease
matching: hair shaft
Physical portion of hair, made of dead keratinized epidermal cells bonded together by protein
matching: medulla
Central area of hair
matching: cortex
Consists of hardened cells…
matching: matrix
Actively dividing cells within hair, inside bulb
matching: cuticle
Consists of hardened cells containing keratin; outer layer of hair
Portion of stratum corneum that grows onto the nail body
matching: nail matrix
Actively dividing cells of the nail, region of nail growth, 1mm per week
matching: nail bed
Hardened epithelial tissue above the hyponychium
matching: Lunula
white crescent shaped area at proximal end of nail bed
In the elderly, blood supply to the dermis is reduced and sweat glands are less active. This combination of factors would most affect…
the ability to thermoregulate
_____ is/are a result of a progressive loss of collagen and elastic fibers
Wrinkles
The “rule of nines” is used to estimate the…
Surface area affected by burns
A person with a severe sunburn would most likely have damage in which layer of the skin?
Epidermis
In frostbite, the skin damage primarily occurs due to…
Ice crystal formation in tissues
A patient with vitiligo will show which of the following in affected areas?
Loss of skin pigmentation
The primary risk factor for the development of squamous cell carcinoma is…
Exposure to UV radiation
