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Histology > Integumentary System Part III > Flashcards

Integumentary System Part III Flashcards

1
Q

located between the epidermis and subcutaneous layer

A

DERMIS

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2
Q

anchors epidermal accessory structures (e.g., hair follicles, sweat glands)

A

DERMIS

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3
Q

TWO COMPONENTS OF THE DERMIS

A
  1. PAPILLARY LAYER
  2. RETICULAR LAYER
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4
Q

to support the avascular epidermis with vital nutrients

A

PAPILLARY LAYER

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5
Q

to provide a network for thermoregulation.

A

PAPILLARY LAYER

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6
Q

Contains free sensory nerve endings, smaller capillaries, lymphatics, and structures such as Meissner’s corpuscles [mechanoreceptor] (responsible for light touch)

A

PAPILLARY LAYER

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7
Q

consists of dense irregular connective tissue

A

RETICULAR LAYER

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8
Q

is important in giving the skin its overall strength and elasticity

A

RETICULAR LAYER

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9
Q

Housing other important epithelial-derived structures such as glands and hair follicles.

A

RETICULAR LAYER

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10
Q

Contains larger blood vessels and nerve fibers.

A

RETICULAR LAYER

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11
Q

Lies below the integument

A

HYPODERMIS

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12
Q

Stabilizes the skin

A

HYPODERMIS

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13
Q

Allows separate movement

A

HYPODERMIS

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14
Q

Made of elastic areolar and adipose tissues

A

HYPODERMIS

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15
Q

Connected to the reticular layer of the intergument by connective tissue fibers

A

HYPODERMIS

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16
Q

Deposits of Subcutaneous fats:

A
  1. Distribution patterns determined by hormones
  2. Reduced by cosmetic liposuction (lipoplasty).
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17
Q

ACCESSORY STRUCTURES

A
  1. Hair follicles and hair
  2. Sebaceous glands
  3. Nails
  4. Sweat glands
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18
Q

Produced by hair follicles which are made of hard keratinized epithelial cells.

A

HAIR

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19
Q

Provide pigment for hair color

A

MELANOCYTES

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20
Q

the organs that form the hairs

A

HAIR FOLLICLES

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21
Q

wrapped in a dense connective tissue sheath

A

HAIR FOLLICLES

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22
Q

base is surrounded by sensory nerves (Root Hair Plexus)

A

HAIR FOLLICLES

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23
Q

Controls bacteria

A

HAIR FOLLICLES

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24
Q

ACCESSORY STRUCTURES OF HAIR:

A

ARRECTOR PILI
SEBACEOUS
PILOSEBACEOUS UNIT

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25
Q

involuntary smooth muscle

A

ARRECTOR PILI

26
Q

causes hair to stand up

A

ARRECTOR PILI

27
Q

produces “goosebumps”

A

ARRECTOR PILI

28
Q

lubricates the hair

A

SEBACEOUS

29
Q

branched acinar glands

A

SEBACEOUS

30
Q

is made of hair follicle and its associated sebaceous glands

A

PILOSEBACEOUS UNIT

31
Q

REGIONS OF THE HAIR:

A

HAIR ROOT
HAIR SHAFT

32
Q

lower part of the hair

A

HAIR ROOT

33
Q

attached to the integument

A

HAIR ROOT

34
Q

upper part of the hair

A

HAIR SHAFT

35
Q

not attached to the integument

A

HAIR SHAFT

36
Q

HAIR SHAFT STRUCTURE:

A

MEDULLA
CORTEX
CUTICLE

37
Q

Core, dead cells contain soft keratin and air to provide flexible

A

MEDULLA

38
Q

middle layer, dead cells contain hard keratin to provide stiffness

A

CORTEX

39
Q

eponychium

A

CUTICLE

40
Q

outermost, overlapping dead keratinized cells form shiny surface.

A

CUTICLE

41
Q

protect fingers and toes

A

NAILS

42
Q

made of dead cells packed with keratin

A

NAILS

43
Q

______ can change nail structure.

A

Metabolic disorders

44
Q

occurs in a deep epidermal fold near the bone called the nail root

A

NAIL PRODUCTION

45
Q

STRUCTURES OF A NAIL:

A

NAIL BODY
LUNULA
HYPONYCHIUM

46
Q

nail plate

A

NAIL BODY

47
Q

the visible portion of the nail

A

NAIL BODY

48
Q

covers the nail bed

A

NAIL BODY

49
Q

the pail crescent at the base of the nail

A

LUNULA

50
Q

epidermal fold at the distal end of the finger

A

HYPONYCHIUM

51
Q

SWEAT GLANDS:

A

ECCRINE SWEAT GLANDS
APOCRINE SWEAT GLAND

52
Q

merocrine secretion

A

ECCRINE SWEAT GLANDS

53
Q

empty directly onto skin surface

A

ECCRINE SWEAT GLANDS

54
Q

Clear, watery secretion (99% H2O; rest NaCl + some waste products)

A

ECCRINE SWEAT GLANDS

55
Q

Location: most all over the body (esp. abundant on palms & soles of the feet 500/cm2)

A

ECCRINE SWEAT GLANDS

56
Q

empty into hair follicle

A

APOCRINE SWEAT GLAND

57
Q

viscous, cloudy secretion > good nutrient source for bacteria (odor)

A

APOCRINE SWEAT GLAND

58
Q

secretion may contain Pheromones

A

APOCRINE SWEAT GLAND

59
Q

secretion begins at puberty and is stimulated during emotional distress

A

APOCRINE SWEAT GLAND

60
Q

Location of Apocrine Sweat Glands

A

armpits, groin, nipples

Histology (37 decks)

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