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Undeleted > Integumentary System > Flashcards

Integumentary System Flashcards

1
Q

4 types of cells found in skin?

A

Keratinocytes Melanocytes Langerhans cells Merkel cells

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1
Q

Main cells of the skin- connected to each other via desmosomes

A

keratinocytes

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2
Q

type of secretion of eccrine & apocrine sweat glands?

A

maracrine- release through exocytosis into lumen, which leads to duct, which goes to surface

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3
Q

where are blood vessels of skin found?

A

in dermis (dense CT)

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4
Q

epidermis is derived from ___ & dermis is derived from ___

A

ectoderm mesoderm

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4
Q

type of skin?

A

thin skin

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5
Q

Oval structure that looks like cut onion. Deep in reticular dermis. Concentric rings of Schwann cells. Detects coarse touch.

A

Pacinian corpuscle

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6
Q

Layer?

A

Stratum granulosum

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7
Q

As keratinocytes move toward surface, pH becomes…

A

more acidic (desmosomes break down, cells slough off)

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8
Q

2 types of sudoriferous (sweat) glands?

A

eccrine & apocrine

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8
Q

these glands are important in thermoregulation- they dissipate heat, cool blood

A

eccrine

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9
Q

glands found everywhere EXCEPT thick skin. branched acinar cells, holocrine secretion, produce serum that softens skin

A

sebaceous (oil) glands

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9
Q

Identify.

A

Hair follicle

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10
Q

how is secretion of apocrine gland different from secretion of eccrine gland?

A

apocrine secretion is more thick, protein rich- results in body odor

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11
Q

what is largest organ in the body?

A

skin

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12
Q

Deepest layer of skin? (Both thin & thick)

A

stratum basale

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12
Q

mechanism of secretion for sebaceous glands?

A

holocrine- cell gets larger until it ruptures, cell dies with secretion

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13
Q

Shape of melanocytes?

A

rounded cell bodies with irregular cytoplasmic extensions

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13
Q

superficial layer of dermis? deep layer of dermis?

A

papillary layer reticular layer

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14
Q

glands confined to skin of axilla & peritoneal regions, develop in response to sex hormones, very large lumen, secrete onto hair follicle that then leads to surface

A

apocrine

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16
Q

superficial layer of skin? deep layer of skin?

A

epidermis dermis

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17
Q

layers of thick skin?

A

Stratum basale Stratum spinosum Stratum granulosum Stratum lucidum Stratum corneum

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18
Q

Identify.

A

Tonofibrils

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19
Q

elongates keratinized structures derived from invaginations of epithelium (only associated with thin skin)

A

hair follicles

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20
Q

Thin transparent layer of skin- can’t see edges of cells. No nuclei or granules.

A

stratum lucidum

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20
Q

Where are Langerhans cells found?

A

stratum spinosum

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20
Q

Identify.

A

nail

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22
Q

Cells undergoing mitosis are found in this skin layer

A

stratum basale

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23
Q

pigment producing cells of the skin

A

melanocytes

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24
Q

Shape of cells found in stratum basale?

A

cuboidal

25
Q

Layer?

A

stratum corneum

25
Q

Identify.

A

Sudiferous (sweat) glands

27
Q

Detect light touch- contain elliptical sensory receptors. Found in dermal papillae

A

Meissner corpuscles

27
Q

Layer?

A

stratum lucidum

28
Q

Flattened “cortified” cells with no nucleus where cells are sloughing off

A

stratum corneum

30
Q

Cells that protect nucleus of keratinocytes from sunlight?

A

melanocytes

32
Q

Epidermal stem cells, melanocytes, and Merkel cells are all found in this skin layer

A

stratum basale

34
Q

Granules of stratum granulosum contain…

A

keratohyaline

35
Q

Cell Type?

A

Melanocyte

37
Q

Keratins bind together to form these intermediate filaments which terminate at desmosomes

A

tonofibrils

38
Q

antigen presenting cells of the skin

A

Langerhans cells

39
Q

found in dermis- connected to hair follicles, made up of smooth muscle tissue that connects hair follicle to dermal papillary layer, causes hair shafts to pull/stand up on end

A

arrector pili muscles

41
Q

hair is present in which type of skin?

A

thin skin

43
Q

Tactile epithelial cells important for sensory reception of touch?

A

Merkel cells

44
Q

what is integumentary system comprised of?

A

skin hair nails sweat glands oil glands

45
Q

Identify both.

A

Eccrine sweat gland (left)

Apocrine sweat gland (right)

46
Q

layer deep to the skin

A

hypodermis (aka subcutaneous layer)

47
Q

When stained with H&E, stratum lucidum stains very…

A

pink

48
Q

layers of thin skin?

A

Stratum basale Stratum spinosum Stratum granulosum Stratum corneum

49
Q

Cell Type?

A

Merkel cell

50
Q

layer that is present in thick skin but not thin skin?

A

stratum lucidum

51
Q

Most superficial layer of skin? (Both thin & thick)

A

stratum corneum

52
Q

Identify.

A

Apocrine sweat gland

53
Q

Identify 1-2.

A
  1. Papillary layer of dermis
  2. Reticular layer of dermis
55
Q

flexible plates of keratin

A

nail

56
Q

Thin skin has __ layers while thick skin has __ layers

A

4 5

57
Q

Identify.

A

Sebacious (oil) gland

58
Q

Oval-shaped cells containing lipids are found in this layer to make skin waterproof

A

stratum granulosum

59
Q

What type of filament is keratin?

A

intermediate filament

60
Q

Layer?

A

stratum corneum

61
Q

type of skin?

A

thick skin

62
Q

Layer?

A

stratum granulosum

63
Q

Name the layers.

A
  1. Papillary Layer of dermis
  2. Reticular Layer of dermis
64
Q

sweat glands whose ducts lead all the way to surface, most numerous on soles of feet, coiled appearance of duct (so cross-section is a circle)

A

eccrine

65
Q

functions of integumentary system

A

Protection Sensation Temperature regulation Metabolic Waste elimination

66
Q

Cell Type?

A

Langerhans cells

67
Q

where is thick skin found?

A

palms of hands, soles of feet, areas of abrasion

68
Q

Identify.

A

Meissner corpuscles.

69
Q

Identify.

A

Pacinian Corpuscles

70
Q

Where are Merkel cells found?

A

stratum basale

71
Q

epidermis epithelium is…

A

keratinized stratified squamous

72
Q

Type of tissue in papillary layer? In reticular layer?

A

aerolar CT dense irregular CT

73
Q

Layer of skin where cells have shrunk a little, are flattened. Has spikey appearance

A

stratum spinosum

74
Q

Keratohyaline granules stain very…

A

basophilic

Undeleted (13 decks)

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