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Layers Flashcards

1
Q

Continuously proliferating Stratified Squamous
Epithelium

A

Epidermis

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2
Q

Provides/Produces a non-living surface layer of
protein

A

Epidermis

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3
Q

In direct contact with the external
environment

A

epidermis

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4
Q

Associated with lipids

A

EPIDERMIS

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5
Q

This constantly shed

A

epidermis

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6
Q

what tissues compose dermis

A

fibrous and fibro-adipose tissue

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7
Q

this support epidermis physically and metabolically

A

dermis

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8
Q

what protein is in epidermis

A

keratin

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9
Q

this is 0.07 to 0.12 mm

A

epidermis

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10
Q

surface epithelium of epidermis

A

Stratified squamous keratinized epithelium

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11
Q

layer for mitosis in epidermis

A

germinal basal

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12
Q

what production associated with germinal basal layer?

A

keratinocytes

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13
Q

true or false: germinal basal layer is in continuously in mitosis

A

true

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14
Q

they are make up mostly of epidermis

A

Keratinocytes

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15
Q

this means the peeling of the skin

A

desquamation

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16
Q

Rate of mitosis = Rate of desquamation

A

Average: 15-30 days; 25 to 50 days

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17
Q

this is the major distinction between thick and thin skin

A

epidermis

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18
Q

75 to 150 um

A

thin skin

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19
Q

400 to 1400 um

A

thick skin

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20
Q

germinal layer

A

stratum basle

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21
Q

constant supply of new keratinocytes

A

stratum basale

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22
Q

stratum Basale has this figures which constantly produce new keratinocytes

A

mitotic figures

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23
Q

cells shape in stratum basale

A

cuboidal or low columnar

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24
Q

stratum basale cells are attached to the basement membrane via?

A

hemidesmosomes

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25
cells stratum basale are attached to each other by
desmosomes
26
nucleus: Large ; cytoplasm: ?
basophilic
27
thickest sublayer of epidermis
stratum spinosum
28
Large, cuboidal to polygonal, some flattened cells
Stratum Spinosum
29
Numerous cytoplasmic prickles and adjacent cells are bound by ?
desmosomes
30
stratum spinosum nucleus location?
central
31
cytoplasm of stratum spinosum
basophilic
32
what does cytokeratin form
intracellular fibrils
33
what is cytokeratin?
(synthetic fibrillar protein)
34
These spaces are occupied by seemingly spinous structures called
tonofibrils
35
what layer continuous synthesizing of keratins
stratum spinosum
36
3-5 rows of flattened cells
Stratum Granulosum
37
stratum granulosom cytoplasm are filled with numerous ?
keratohyalin granules and coarse basophilic granules
38
Found only in thick skin
stratum lucidum
39
thick skin is found only what part of the body?
palm and sole
40
Thin translucent layer of flattened eosinophilic keratinocytes
stratum lucidum
40
true or false: stratum lucidum has organelles and nuclei are found within the cells
false (they are absent di pumasok)
41
in stratum lucidum, cytoplasm are fill with what?
keratin filaments in an electron dense matrix
42
15 to 20 layers of squamous keratinized cells
stratum corneum
43
this is layer of dead and dying cells
stratum corneum
44
characteristics of cells in stratum corneum?
flat, cornified, and unnucleated filled with mature keratin
45
this layer is the end of keratinization
Stratum corneum
46
Continuously shed at epidermal surface
stratum corneum
47
location of thick skin
palms and soles
48
location of thin skin
rest of the body except palms and soles
49
true or false:thick skin has hair follicle
false (walang hair folliclesa thick skin sige magulat ka pag may j\hair sa palm mo and sole )
50
arrector pili muscle are found (thin or thick)
thin skin
51
sebaceous glands are found (thin or thick)
thin skin (never oily and palm and soles natin)
52
sweat glands (thick or thin)
both
53
Layer underneath the epidermis
dermis
54
Provides a flexible but strong base for the epidermis
dermis
55
binds to the hypodermis
dermis
56
dermis is important for _____
themoregulation
57
two zone of dermis
papillary and reticular
58
this is the upper portion of dermis
papillary
59
thicker layer of the dermis
reticular
60
important constituent of papillary and reticular zones
elastin
61
this is black against red stained collagen
elastin
62
what kind of staining when the elastic fibers will appear black against red collagen
vernhoeff stain
63
characteristic of elastin in reticular layer
long, thick, and follow course of collagen bundles
64
characteristic of elastin in papillary layer
very fine, scanty, and scarcely stained
65
cellular components of dermis
Fibroblasts Lymphocytes Mast cells Tissue macrophages
66
thickness of dermis?
0.3 - 4 mm
67
Loose connective tissue with types I and III collagen fibers, fibroblasts and scattered mast cells, dendritic cells, and leukocytes
papillary dermis
68
papillary dermis consist of
small and highly sensitive vascular papillae
69
papillary dermis contains pacinian corpuscles (true or false)
false (meissner's corpuscle)
70
what are the vascular papillae found in papillary
venules, arterioles, capillary loops, & lymphatics
71
Dense irregular connective tissue (mainly bundles of type I collagen), with more fibers and fewer cells
reticular dermis
72
Coarse, irregular bundles of collagen, very large elastic fiber
reticular dermis
73
fribroelastic
reticular dermis
74
in reticular dermis, blood vessels are (small or large)
large and deeper
75
what are the main cells in reticular
fibroblast and histiocytes
76
what are histiocytes
macrophages in tissues
77
not a layer of the skin
hypodermis
78
hypodermis is made up what tissue
adipose tissue
79
hypodermis is also called
subcutaneous layer of loose CT beneath the dermis
80
superficial fascia
hypodermis
81
function of hypodermis
binds skin loosely to subjacent organs
82
what cells are found in hypodermis
adipocytes
83
Str. basale + Str. spinosum
Stratum germinativum
84
a term meaning fully keratinized or cornified
squames

histology (5 decks)

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