Lecture 3: Integument & Barriers Flashcards Preview

COM: Immunology (Midterm) > Lecture 3: Integument & Barriers > Flashcards

Flashcards in Lecture 3: Integument & Barriers Deck (91):
1

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2

Name A and the tissue type

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3

What type of epithelium is this?

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Stratified Squamous Nonkeratinized

4

What type of epithelium is this?

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Stratified squamous keratinized

5

What type of epithelium is this?

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Stratified cuboidal epithelium

6

What type of epithelium is this?

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Stratified columnar epithelium

7

What type of epithelium is this?

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Pseudostratified columnar epithelium

8

What type of epithelium is this?

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Transitional epithelium

9

What type of epithelium is this?

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Simple cuboidal epithelium

10

What type of epithelium is this?

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Simple columnar epithelium

11

What structure is this and what is its purpose?

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Microvilli -> surface specialization to increase cell surface area 

12

What is this structure and what is its purpose?

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Stereocilia -> specialized for absorption and secretion

13

Label 1-4

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1) Zonula Occludens (tight junction)

2) Zonula Adherens (adhering junctions)

3) Macula adherens (desmosomes)

4) Gap Junctions (Connexins)

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14

What structure is holding the 2 cell membranes together?

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Tight junction

15

What is the structure in the picture?

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Basement membrane made up of basal lamina and the reticular lamina

16

What structure is shown in the picture?

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Hemidesmosomes

17

What is this a picture of in general?

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skin

18

What type of skin is shown in the picture?

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Thick  skin

19

Label A-C

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A) Duct of sweat gland

B) Sweat gland

C) Subcutaneous adipose tissue

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20

What type of skin is this?

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Thin skin

21

Label A-C

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A) Upper part of hair follicle 

B) Sebaceous gland

C) Sweat gland

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22

What structure is the arrow pointing at?

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Pacinian corpuscle

23

What structure is the arrow pointing at?

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Ruffini end organ 

24

What structure is the arrow pointing at?

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Peritrichial nerve ending

25

What structure is the arrow pointing at?

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Meissner's corpuscle

26

What is this a picture of?

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Peritrichial nerve endings wrapped around the base of the hair follicle

 

- Stimulated by hair movement

27

What layer of the skin are peritrichial nerve endings wrapped around the base of the hair follicle found in?

Reticular layer of the dermis

28

What 2 structures are the arrows pointing at?

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left arrow = merkel cell

Right arrow = melanocyte

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29

Label A-D

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A) Keratinocytes

B) Merkel cell

C) Langerhans cell

D) Melanocyte

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30

What structure is the arrow pointing at?

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Meissner's corpuscle

31

What layer of the skin is this

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reticular layer of the dermis 

32

What structure is being depicted in the picture?

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Desmosome

33

What is the arrow pointing at?

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Melanocyte

34

What structure is the arrow pointing at?

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Pacinian corpuscle

35

What layer of the skin is the arrow pointing at?

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Stratum Lucidium of the Epidermis 

36

What cell type is this?

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Keratinocytes

37

Label A-C

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A) Melanocytes

B) Debdrites

C) Keratinocyte

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38

Label A-C

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A) Stratum corneum

B) Stratum lucidium 

C) Stratum granulosum 

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39

Label D & E

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D) Stratum spinosum

E) Stratum basale

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40

What structure is this?

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Ruffini end organ in the reticular layer of the dermis 

41

What structures do the arrows depict?

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Top arrow = ruffinis end organ

Bottom arrow = pacinian corpuscle

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42

Label A-C

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A) Stratum corneum

B) Stratum lucidium

C) Stratum granulosum

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43

Label D-F

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D) Stratum spinosum

E) Stratum Basale

F) Dermis

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44

Label G-J

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G) Dead keratinocytes

H) Lamellar granules

I) Keratinocytes

J) Langerhans cell

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45

Label K-N

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K) melanocytes

L) merkel cell

M) tactile disc

N) sensory neuron

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46

What 2 cell types are depicted in this picture?

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47

Label A-C

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A) Epidermis

B) Dermis

C) Hypodermis

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48

What cell type is "L"?

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Langerhans cells

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49

What cell type is this?

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melanocytes

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50

What layer of the skin is this?

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Stratum spinosum of the epidermis

51

What structure is depicted with the arrows?

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hemidesmosomes

52

What structure is depicted in this picture?

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hemidesmosomes

53

What layer of the skin is this?

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Stratum spinosum of the epidermis

54

What cell type is depicted in the picture?

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Merkel cell

55

Where are stereocilia found?

Epididymis and inner ear 

56

Lamina ________ = extracellular glycoproteins (entactin, integrins and laminin)

lucida

57

Lamina ______ = meshwork of collagen IV fibrils

Densa

58

Reticular lamina is produced by fibroblasts and composed of what two types of collagen?

I and III

59

What 2 types of laminin make up the basement membrane?

Basal lamina and reticular lamina

60

What is the largest organ in the body?

Skin 

- 16% of body weight 

61

Thick skin has a very thick stratum ________

Corneum

62

What types of glands does thick skin have?

Only sweat glands 

- No sebaceous glands 

63

Thin skin has a thin stratum ________

corneum 

64

What layer of the skin is avascular?

Epidermis 

65

Where is the final location of melanin?

Keratinocytes in the epidermis 

66

Where do melanocytes exist?

Stratum basale -> no desmosomes 

67

Where do dendritic cells mainly exist?

Stratum spinosum 

68

What layer of the skin do merkels cells exist in the most?

Stratum basale

 

- More numerous in thick skin!

- Can give rise to bery bad skin cancer 

69

Dermatoglyphs: fingerprints/epidermal ridges are only present in what skin type?

Thick skin 

70

The dermis has a rich blood supply and is made up of CT derived from ________

Mesoderm 

71

What are the 2 layers of the dermis from outer to inner 

Papillary -> reticular 

72

What mechanoreceptor is found in the papillary layer of the dermis, is an encapsulated touch receptor and is prominent in lips, finger tips, plantar feet and genitals?

Meissner's corpuscle 

73

The reticular layer of the dermis is made up of dense irregular CT made of what 2 things?

Type I collagen 

Elastic fibers 

74

What 3 mechanoreceptors are found in the reticular layer of the dermis?

Pacinian corpuscles 

Ruffini end organ (krause end bulbs)

Peritrichial nerve endings 

75

What mechanoreceptor has an onion like appearance, is an encapsulated pressure receptor, is larger and less numerous than meissner's corpuscles and is also present in the hypodermis?

Pacinian corpuscles 

76

What mechanoreceptor responds to stretching and is present in skin and joint capsules?

Ruffini end organ 

77

What mechanoreceptor is a nerve fiber wrapped around the base of the hair follicle and stimulated by hair movement?

Peritrichial nerve ending 

78

The hypodermis is made of loose CT developed from _________

Mesoderm

79

Sweat glands are _______ tubular

Coiled

80

Sebaceous glands are _______ alveolar 

Branched 

81

Holocrine glands are a type of __________ gland

Sebaceous 

82

Merocrine and apocrine glands are types of _________ glands 

sweat

83

Where are glands found in the skin?

In the deep dermis or hypodermis 

84

What gland type is abundant on the face and scalp, none are found on palms or hands, they have a single duct, and are usually associated with hair follicles?

Sebaceous glands 

85

What is the most abundant type of sweat gland and is located throughout skin especially thick skin, is not found on the lips and genitals, and produce a water secretory product as part of thermoregulation?

Eccrine sweat glands 

86

Which sweat gland is limited to the axilla, pubic region, anal region, areola and external genitalia and secretes a viscous secretory product in response to hormones?

Appocrine glands 

87

Ceruminous glands are a type of specialized apocrine gland that secretes what?

Ear wax

88

Ciliary glands (of Moll) are a specialized type of apocrine gland that are associated with what?

Eye lids and eye lashes 

89

What type of epithelium is found in the secretory portion versus duct portion of sweat glands?

Secretory portions = simple cuboidal epithelium 

Duct portion = stratified cuboidal epithelium 

90

What gland type is this?

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Sebaceous

91

What gland type is this?

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Sweat gland