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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
involuntary smooth muscle
ARRECTOR PILI
26
causes hair to stand up
ARRECTOR PILI
27
produces “goosebumps”
ARRECTOR PILI
28
lubricates the hair
SEBACEOUS
29
branched acinar glands
SEBACEOUS
30
is made of hair follicle and its associated sebaceous glands
PILOSEBACEOUS UNIT
31
REGIONS OF THE HAIR:
HAIR ROOT HAIR SHAFT
32
lower part of the hair
HAIR ROOT
33
attached to the integument
HAIR ROOT
34
upper part of the hair
HAIR SHAFT
35
not attached to the integument
HAIR SHAFT
36
HAIR SHAFT STRUCTURE:
MEDULLA CORTEX CUTICLE
37
Core, dead cells contain soft keratin and air to provide flexible
MEDULLA
38
middle layer, dead cells contain hard keratin to provide stiffness
CORTEX
39
eponychium
CUTICLE
40
outermost, overlapping dead keratinized cells form shiny surface.
CUTICLE
41
protect fingers and toes
NAILS
42
made of dead cells packed with keratin
NAILS
43
______ can change nail structure.
Metabolic disorders
44
occurs in a deep epidermal fold near the bone called the nail root
NAIL PRODUCTION
45
STRUCTURES OF A NAIL:
NAIL BODY LUNULA HYPONYCHIUM
46
nail plate
NAIL BODY
47
the visible portion of the nail
NAIL BODY
48
covers the nail bed
NAIL BODY
49
the pail crescent at the base of the nail
LUNULA
50
epidermal fold at the distal end of the finger
HYPONYCHIUM
51
SWEAT GLANDS:
ECCRINE SWEAT GLANDS APOCRINE SWEAT GLAND
52
merocrine secretion
ECCRINE SWEAT GLANDS
53
empty directly onto skin surface
ECCRINE SWEAT GLANDS
54
Clear, watery secretion (99% H2O; rest NaCl + some waste products)
ECCRINE SWEAT GLANDS
55
Location: most all over the body (esp. abundant on palms & soles of the feet 500/cm2)
ECCRINE SWEAT GLANDS
56
empty into hair follicle
APOCRINE SWEAT GLAND
57
viscous, cloudy secretion > good nutrient source for bacteria (odor)
APOCRINE SWEAT GLAND
58
secretion may contain Pheromones
APOCRINE SWEAT GLAND
59
secretion begins at puberty and is stimulated during emotional distress
APOCRINE SWEAT GLAND
60
Location of Apocrine Sweat Glands
armpits, groin, nipples

Histology (37 decks)

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