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integumentary system

Terms in this set (67)

What is the outermost layer of the skin?
epidermis
what is the middle layer of skin?
dermis
what is the innermost layer of skin?
hypodermis
what layer of the skin is tattoo ink put in?
dermis
What makes up the integumentary system?
the skin and its accessory organs
how does the body respond to excessive heat?
dilation of dermal blood vessels and sweating
how does the body respond to excessive cooling?
constricting dermal blood vessels, inactivating sweat glands, and shivering
What is inflammation?
blood vessels dialate
what are the four types of membranes?
serous, mucous, synovial, cutaneous
What type of tissue is the epidermis?
stratified squamous epithelium
What layer lacks blood vessels?
epidermis
what is the main function of epidermis?
protection
what type of tissue is the dermis?
connective tissue with collagen and elastic fibers
what layer of skin is responsible for fingerprints?
dermis
Does the dermis contain blood vessels?
yes
what is the function of hypodermis?
It anchors the skin to the underlying structures
It allows the skin to slide freely
what type of tissue is hypodermis composed of?
adipose tissue
are there blood vessels in the hypodermis?
yes
what skin layer is affected by third degree burns?
epidermis, dermis, and hypodermis
what skin layer is affected by second degree burns?
epidermis and dermis
what skin layer is affected by first degree burns?
epidermis
What burn degree would be least painful?
first degree
what colors is melanin responsible for?
yellow brownish black
what is the function of melanin?
To protect cells from the harmful effects of UV light
what colors is carotene responsible for?
yellow-orange
what colors is hemoglobin responsible for?
red
What are melanocytes responsible for?
pigmentation
what type of cell is stratum corneum composed of?
dead flattened epithelial cells
what type of cell is stratum lucidum made of?
clear cells, cell membranes and organelles are no longer visible
what type of cell is stratum granusolum made of?
3-5 layers of flattened granular cells with keratin
what type of cells is stratum spinosum made of?
many layers of cells with large nuclei
what type of cells is stratum basale of?
single row of cuboidal or columnal cells with melanocytes
which epidermis skin layer is found on palms of hands and soles of feet?
stratum lucidum
what epidermis skin layer is melanocytes found in?
stratum basale
What is the outermost layer of the epidermis?
stratum corneum
What is the deepest layer of the epidermis?
stratum basale
what epidermis layer is beneath stratum granusolum?
stratum spinosum
what epidermis layer is beneath stratum corneum?
stratum lucidum
What do sebaceous glands secrete?
sebum
what are the types of sweat glands?
eccrine and apocrine
when is eccrine sweat glands activated?
respond to body tempurature
When is the apocrine gland activated?
respond to body temp, stress, sexual arousal, puberty
What do ceruminous glands secrete?
ear wax
What do mammary glands secrete?
milk
Where are sweat glands located?
dermis
what does it mean if cancer is malignant?
moved to other parts of the body
what does if mean if cancer is benign?
not harmful
Where is the serous membrane located?
lines thorax and abdomen and cover organs
Where is the mucous membrane found?
cavities and openings that lead to outside of body
Where is the synovial membrane found?
joint cavities
Where is the cutaneous membrane found?
Found in the skin covering the body
what is the function of serous membrane?
secrete fluid that acts as a lubricant
what is the function of the mucous membrane?
line and protect the inside of your body
what is the function of the synovial membrane?
secretes synovial fluid
what is the function of cutaneous membeane?
protect the rest of the bodys tissues and organs
what is the function of nails?
protect fingers and toes
what is the function of hair follicles?
help your hair grow
what cells are nails consisted of?
stratified squamos epithelial
Where are Meissner's corpuscles located?
dermal papillae
where are merkels disks located?
basal epidermis
Where are pacinian corpuscles found?
hypodermis
Where are Ruffini corpuscles located?
fingernails
where are bare nerve endings located?
everywhere
Where are fingerprints formed?
dermal palillae in dermis
what are signs of skin cancer?
new growth or sore, could bleed, waxy smooth red pale or lumpy
where is stage 0 cancer found?
only the epidermis
where is stage 1 cancer found?
epidermis and dermis
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