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a&p lab > Tissues/Integumentary System > Flashcards

Tissues/Integumentary System Flashcards

1
Q

Integumentary system

A

consist; SKIN, HAIR, NAILS, sev. GLANDS

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2
Q

Epidermis

A

OUTERMOST Superficial layer (Stratified squamous = PROTECTION)

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3
Q

Stratum basale

A

single layer attached to Basement membrane; DEEPEST layer

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4
Q

Melanocytes

A

cell; produce Melanin

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5
Q

Melanin

A

skin Pigment from Melanocytes

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6
Q

Stratum spinosum

A

layer; cells ABOVE the Strata basale

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7
Q

Stratum granulosum

A

layer; Keratohyalin granules accumulate in cells

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8
Q

Keratohyalin

A

Granule (Secretory vesicle) precursor of Keratin (locate; OUTERMOST Epidermis)

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9
Q

Stratum lucidum

A

transparent band of flat DEAD Keratinocytes (locate; Thick Skin)

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10
Q

Stratum corneum

A

tough OUTERMOST layer of KERATINIZED cells

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11
Q

Keratinocytes

A

cells; produce Keratin

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12
Q

Keratin

A

protein; PROTECTIVE

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13
Q

Dermis

A

structural integrity of Skin

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14
Q

Papillary Layer

A

Areolar C.T. w/Collagen & Elastic fibers

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15
Q

Papillae

A

bumps; interlock w/Epidermis & provide Adhesion between 2 layers

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16
Q

Reticular Layer

A

COLLAGEN fibers = STRENGTH & RESISLENCY to SKIN + ELASTIC fibers = STRETCH

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17
Q

Tactile (Meissner) corpuscles

A

Light touch receptor; in UPPER Dermis

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18
Q

Tactile (Merkel) discs

A

Light touch receptor; in UPPER Dermis & LOWER Dermis

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19
Q

Lamellar (Pacinian) corpuscles

A

receptor; sense PRESSURE (Vibration, Skin)

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20
Q

Warm/Cool receptors

A

sense TEMP. (in comfortable temp = both receptors FIRE)

21
Q

Pain receptors

A

Naked nerve endings; respond to ENVIRONMENTAL stimuli + skin temp. BEYOND range of receptors FIRE ( in DERMIS)

22
Q

Hypodermis

A

SUBCUTANEOUS layer; DEEP in Skin

23
Q

Sudoriferous (sweat) gland

A

ECCRINE & APOPCRINE glands produce SWEAT

24
Q

Merocrine (eccrine) gland

A

ECCRINE, TEMP. Sensitive (soles of FEET, PALM, FOREHEAD)

25
Q

Apopcrine sweat gland

A

Activate after PUBERTY- BO (ARMPITS, GROIN)

26
Q

Mammary gland

A

SWEAT glands that SECRETE Milk

27
Q

Ceruminous (earwax) gland

A

Modified APOPCRINE glands in OUTER ear canal, SECRETE Cerumen

28
Q

Sebaceous (oil) gland

A

SECRETE Oily material (Sebum)

29
Q

Sebum

A

Oily material

30
Q

Hair follicle

A

produce Kernatized cells

31
Q

Hair

A

produced by Hair follicles (Filamentous strands of DEAD Kernatized cells)

32
Q

Shaft

A

PROJECTS from Skin

33
Q

Root

A

DEEPER & enclosed by FOLLICLE

34
Q

Hair bulb

A

Actively GROWS

35
Q

Medulla

A

CENTRAL part of Hair

36
Q

Cortex

A

ENCLOSE Medulla

37
Q

Cuticle

A

ABOVE the Cortex

38
Q

Determinate hair

A

GROWS to certain LENGTH & STOPS

39
Q

Indeterminate hair

A

Cont. to GROW regardless of Length

40
Q

Piloerector muscle

A

(Arrector pili) SMOOTH muscle attaching to follicle to Dermis (Contract to cause GOOSE bumps)

41
Q

Nail body

A

Visbile ATTACHED part of Nail

42
Q

Free Edge

A

OVERHANGS the Fingertip

43
Q

Eponychium

A

CUTICLE, Thickened layer of Skin at BASE of Nail

44
Q

Nail root

A

UNDERNEATH Eponychium, area that Produces rest of Nail BODY

45
Q

Nail bed

A

layer; DEEP to Nail body

46
Q

Lunule

A

Small White Crescent(Base of Nail)

47
Q

Hypochium

A

area UNDER Free edge of Nail

48
Q

Nail groove

A

on each SIDE of Nail

49
Q

Nail fold

A

RIDGE Above Groove

a&p lab (12 decks)

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