INTEGUMENTARY Flashcards

(69 cards)

1
Q

skin is also called as

A

integument

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2
Q

main layers of skin

A

epidermis and dermis

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3
Q
  • Is the superficial layer otherwise known as the Epithelial coat
A

epidermis

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4
Q

dermis is also called as

A

corium

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5
Q
  • Otherwise known as the subcutaneous tissue, that often contains numerous adipose cells
A

hypodermis

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6
Q

epithelial tissue type of epidermis

A

Keratinized stratified squamous epithelium

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7
Q

when does skin renew itself

A

every 20-30 days

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8
Q

the principal cell of epidermis and is responsible in renewal process of skin

A

keratinocytes

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9
Q

celss that produce keratin

A

keratinocytes

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10
Q

thickened skin are called

A

callus

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11
Q

keratinocytes are ______ at the basal layer

A

columnar or cuboidal

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12
Q

produce melanin which accumulates on superficial side of nucleus

A

melanocytes

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13
Q

it prevents DNA mutation from the UV radiation

A

melanocytes

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14
Q

pigment that gives the skin brown to black color; 2nd most abundant

A

melanin

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15
Q

In H&E preparation, melanocytes appear as clear cells. They can be distinguish with the aid of special method called __

A

Dopa technique

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16
Q

how many keratinocytes does the melanin supplies?

A

30

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17
Q

A melanocytes and keratinocytes that is supplies with melanin are collectively referred to as __

A

Epidermal melanin unit

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18
Q

membrane bound granules where melanin is produced

A

melanosomes

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19
Q

source of melanin

A

thyroxine

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20
Q
  • Orange-yellow pigment from some vegetables
A

carotene

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21
Q

carotene accumulates in ___ and stratum ____ cells

A

adipose and stratum corneum cells

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22
Q
  • Red, oxygen-carrying pigment in erythrocytes, that circulate in the capillaries of the dermis
  • More obviously detected in fair skin
A

hemoglobin

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23
Q

antigen-presenting cells

A

langerhans cells

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24
Q

granules in langerhans cells

A

contains Birbeck or vermiform granules

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25
langerhan cells are most numerous in ____
stratum spinosum
26
special technique to stain langerhns
gold chloride
27
receptor associated with langerhan cells
merkel cells
28
cell that is least abundant in terms of number
merkel cells
29
Disc-shaped cells with short cytoplasmic processes
merkel cells
30
merkel cell + axon termination
merkel disc
31
sensory receptor that responds to touch and pressure
merkel disc
32
2 types of skin
thick and thin
33
a type of skin that covers tha palms and soles
thick skin
34
a type of skin that contains sweat glands but lacks hair follicle and sebaceous glands
thick skin
35
- are conical projections from the dermis that would serves as boundaries between the two layers
dermal papillae
36
counter part of dermal papillae
epidermal ridges
37
a type of skin that covers the whole body except palms and soles
thin skin
38
a type of skin that lacks stratum granulosum and lucidum
thin skin
39
five strata of epidermis
stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum
40
a stratum that is highly mitotic
stratum basale
41
a stratum that contains actively dividing cells
stratum basale
42
epthelial tissue of stratum basale
simple columnar or cuboidal cells
43
a stratum that contains langerhan's macrophages
stratum spinosum
44
it has several layers of many sided cells (looks spiny)
stratum spinosum
45
So this spines which are the reason the layer called stratum spinosum, is referred to as _____
intercellular bridges
46
2 granules of strarum granulosum
keratohyaline and lamellar
47
a non membrane bound granules of stratum granulosum
keratohyaline
48
- Another feature of the cell in this layer, stratum granulosum, is the presence of membrane bound lipid containing secretory granules known as the
lamellar granules
49
- Together with desmosomes, they formed an important barrier against the entry or exit of substances to and from the body
lamellar granules of stratum granulosum
50
a startum only found in thick skin
stratum lucidum
51
a layer of epidermis that is known as the clear layer
stratum lucidum
52
outermost layer
starum corneum
53
2 histologic layer of dermis
papillary and reticular layer
54
a connective tissue found in papillary layer
areolar loose connective tissue
55
it forms finger print
papillary layer
56
important for grip
papillary layer
57
a nerve ending/receptor found in papillary layer
meissner's corpuscles
58
thicker than papillary layer
reticular layer
59
a lalayer of dermis that is responsible fot the toughness and streth of skin
reticular layer
60
a connectiv etissue of reticular layer
dense irregular tissue
61
Refers to the loose connective tissue that binds the dermis of the skin to the underlying tissue
hypodermis
62
a nerve ending found in hypodermis
pacinian corpuscles
63
nerve ending responsible for deep touch
pacinian crpuscles
64
structural component of hair
root and internal+external root sheath
65
the hair follicle has expanded bulbous proximal portion known as the ___
hair bulb
66
scale-like modifications of the epidermis
nail
67
forms the protective plates for nails
nail plate
68
area of skin that covers that base of nail
cuticle
69
sweat glan's epithelium
stratified cuboidal epitheliium