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FINALS - HISTO > INTEGUMENTARY > Flashcards

INTEGUMENTARY Flashcards

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
Q

langerhan cells are most numerous in ____

A

stratum spinosum

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26
Q

special technique to stain langerhns

A

gold chloride

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27
Q

receptor associated with langerhan cells

A

merkel cells

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28
Q

cell that is least abundant in terms of number

A

merkel cells

29
Q

Disc-shaped cells with short cytoplasmic processes

A

merkel cells

30
Q

merkel cell + axon termination

A

merkel disc

31
Q

sensory receptor that responds to touch and pressure

A

merkel disc

32
Q

2 types of skin

A

thick and thin

33
Q

a type of skin that covers tha palms and soles

A

thick skin

34
Q

a type of skin that contains sweat glands but lacks hair follicle and sebaceous glands

A

thick skin

35
Q
  • are conical projections from the dermis that would serves as boundaries between the two layers
A

dermal papillae

36
Q

counter part of dermal papillae

A

epidermal ridges

37
Q

a type of skin that covers the whole body except palms and soles

A

thin skin

38
Q

a type of skin that lacks stratum granulosum and lucidum

A

thin skin

39
Q

five strata of epidermis

A

stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

40
Q

a stratum that is highly mitotic

A

stratum basale

41
Q

a stratum that contains actively dividing cells

A

stratum basale

42
Q

epthelial tissue of stratum basale

A

simple columnar or cuboidal cells

43
Q

a stratum that contains langerhan’s macrophages

A

stratum spinosum

44
Q

it has several layers of many sided cells (looks spiny)

A

stratum spinosum

45
Q

So this spines which are the reason the layer called stratum spinosum, is referred to as _____

A

intercellular bridges

46
Q

2 granules of strarum granulosum

A

keratohyaline and lamellar

47
Q

a non membrane bound granules of stratum granulosum

A

keratohyaline

48
Q
  • Another feature of the cell in this layer, stratum granulosum, is the presence of membrane bound lipid containing secretory granules known as the
A

lamellar granules

49
Q
  • Together with desmosomes, they formed an important barrier against the entry or exit of substances to and from the body
A

lamellar granules of stratum granulosum

50
Q

a startum only found in thick skin

A

stratum lucidum

51
Q

a layer of epidermis that is known as the clear layer

A

stratum lucidum

52
Q

outermost layer

A

starum corneum

53
Q

2 histologic layer of dermis

A

papillary and reticular layer

54
Q

a connective tissue found in papillary layer

A

areolar loose connective tissue

55
Q

it forms finger print

A

papillary layer

56
Q

important for grip

A

papillary layer

57
Q

a nerve ending/receptor found in papillary layer

A

meissner’s corpuscles

58
Q

thicker than papillary layer

A

reticular layer

59
Q

a lalayer of dermis that is responsible fot the toughness and streth of skin

A

reticular layer

60
Q

a connectiv etissue of reticular layer

A

dense irregular tissue

61
Q

Refers to the loose connective tissue that binds the dermis of the skin to the underlying tissue

A

hypodermis

62
Q

a nerve ending found in hypodermis

A

pacinian corpuscles

63
Q

nerve ending responsible for deep touch

A

pacinian crpuscles

64
Q

structural component of hair

A

root and internal+external root sheath

65
Q

the hair follicle has expanded bulbous proximal portion known as the ___

A

hair bulb

66
Q

scale-like modifications of the epidermis

A

nail

67
Q

forms the protective plates for nails

A

nail plate

68
Q

area of skin that covers that base of nail

A

cuticle

69
Q

sweat glan’s epithelium

A

stratified cuboidal epitheliium

FINALS - HISTO (5 decks)

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