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55 Cards in this Set

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___________ covers the palms, soles, and corresponding surfaces of the figures and toes. It epidermis alone is about 0.5 mm thick.
Thick skin
THe functions of the skins :
Resistance to trauma and infection, Other barrier functions, Vitamin D Synthesis, Sensation, Thermoregulation, and Social Functions
Cell of the Epidermis:
Stem cells, Keratinocytes, Melanocytes, Tactile Cell, Dendritic cells
Layers of the Epidermis :
Stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, and stratum corneum
___________ consists mainly of a single layer of cuboidal to low calumanr stem cells and keratinocytes resting on the basement membrane.
stratum basale
___________ consists of several layers of keratinocytes. In most skin, this is the thickest stratum, but in think skin it is usually exceeded by the stratum corneum.
stratum spinosum
___________ consists of three to five layers of flat keratinocytes, more think skin than in thin skin .
stratum granulosum
Beneath the epidermis is a connective tissue layer called ___________ . It ranged from 0.2 mm thick in the eyelid to about 4 mm thick in the palms and soles.
Dermis
____________ of the dermis is deeper and much thicker. It is consists of dense irregular connective tisue.
Reticular layer
_____________ is hypodermis composed predominantly of adipose tissue. THis fat is serve as an energy reservoir and thermal insultation.
Subcutaneous Fat
________ is the red pigment of blood, imparts reddish hues to the skin.
hemoglobin
______ a yellow pigment acquired from egg yolk and yellow and orange vegetables.
Carotone
_________ is a genetic lack of melamin that results in white hair.
Albanism
bruise is a mass of clotted bloos showing through the skin.
Hematoma
_________ are the markings on the fingertips that leave distinctive oily fingerprints on surfaces we touch.
Friction ridges
____________ are lines on the flexor surfaces of the digits, palms, wrists, elbow, and other places.
Flexion lines
_____ is birthmarks, patches of discolored skin caused by benign tumor of the dermal blood capillaries.
Hermangiomas
The hair, nails, and cutaneous glands are _____________.
accesory organs
hair is also known as
pilus
________ is fine, downy unpigmented hair that appears on the fetus in the last 3 months of development.
Lanugo
_________ is a longer, coarser, and pigmented. IT forms the eyebrows and eyelashes, covered the scalp.
Terminal hair
The hair bulb, all the tiisue is dead. The hair bulb grows around a bud of vascular connective tissues called _________.
Dermal papilla
__________ is a core of loosely arranged cells and air spaces found in thivk hairs, but absent from thin ones.
medulla
_________ is a surface layers of scaly cells that over laps each other like roof shingles, with their free edged directed upward.
cuticle
_________ consisting of three stages, anagen, catagen, and telogen.
Hair Cycle
Follicles also shrink and begin producing wispy vellus hairs instead of thicker terminal hair.
Alopecia
____________ is the condition in which hair is lost from specific regions of the scalp. IT results from a combination of genetic and hormonal influence.
Pattern Baldness
_______ tends to run in women and children . it is excessive or undessirable hairness in areas that are not usually hairy.
hirsutism
They are composed of very thin, dead, scaly cells, densely packed together and filled with parallel fibers of hard kinetin.
Nails
_____________ a growth zone concealed beneath the skin at the proximal edge of the nail.
Nail matrix
_________ are most numerous gland of the skin, produce watery perspiration that serves primarily to cool the body.
Merocrine sweat gland
________ are properties similar to smooth muscle.
Myoepithelial cells
_________ occurs in the groin, anal region, axilla, and areola, and in mature males, the beard area.
Apocrine sweat cell
sweating with wetness of the skin is called ___________
diaphoresis
_______________ produce an oily secretion callled ________(B)
Sebaceous
(B) Sebum
________ are found only in the external ear canal, where their secretion combines with _______
Ceruminous
Cerumen
________ is the most common type, but it is also the least dangerous because it seldom metastasize. It rises from cells of the stratum basal and eventually invades the dermis.
Basal cell carcinoma
__________ arises from keratincytes of the stratm spinosum. Lesion usually appear on the scalp, ears, lower lips, or back of the hand.
Squamous cell carcinoma
___________ is the most deadly skin cancer but accounts for only 5% of all cases. it often arises from the melanocytes of a preexicting mole
Malignant melanoma
_____ the burned, dead tissue.
eschar
__________ involve the epideris and part of the dermis but leave at least some of the dermis intact.
Second -degree burns
This layer is absent in thin skin:
stratum lucidum
This structure produces "goose bumps":
arrector pili
This epidermal layer is found only in thick skin:
stratum lucidum
Blond hair:
has a sparce amount of melanin in the cortex.
Which of the following will not be a result from high levels of exposure to ultraviolet light in a normal person?
healthy skin
The hair of the fetus is called:
vellus
Which of the following does not contibute to skin color?
hair color
Which type of skin graft is unlikely to cause an immune reaction?
isograft
The epithelium of the nail bed is called:
hyponychium
When you walk outside barefoot, in which part of your toenail will dirt adhere and be the most difficult to remove?
the hyponychium
Which of the following statements about sweat glands is incorrect?
A milky perspiration containing fatty acids is secreted by merocrine sweat glands.
Which of the following types of skin cancer is the least dangerous because it seldom metastasizes?
squamous cell carcinoma
The layer also known as the stratum germinativum is the:
stratum basale
This structure serves an excretory function:
apocrine sweat gland
exocrine sweat gland