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ANA PHY LAB > Integumentary > Flashcards

Integumentary Flashcards

1
Q

Outermost layer

A

epidermis

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2
Q

Inner layer

A

dermis

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3
Q

Subcutaneous; not actually part of the skin

A

Hypodermis

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4
Q

Thick skin is commonly found in?

A

Palms, soles, and fingertips

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5
Q

5 layers of epidermis (from superficial to deep)

A
  • Stratum Cornuem
  • Stratum Licudum
  • Stratum Granulosum
  • Stratum Spinosum
  • Stratum Basale
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6
Q
  • few to 50 more rows of dead, flat keratin that contain mostly keratin
  • no longer contain organelles
  • cells continuously shed and replaced by cells from the deeper strata
A

Stratum Corneum

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7
Q
  • Present only in skin of fingertips, palms, and sole
  • consists of 4-6 rows of clear, flat, dead keratinocytes with large amounts of keratin
A

Stratum Lucidum

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8
Q
  • 3 - 5 rows of flattened keratinocytes, in which organelles are beginning to degenerrate
  • contains the protein KERATOHYALIN and LAMELLAR GRANULES
A

Stratum Granulosum

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9
Q

Which layer is the keratohyalin and Lamellar granules found?

A

Stratum Granulosum

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10
Q

Water-proofing glycolipids (slows water loss in epidermis)

A

Lamellar granules

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11
Q
  • 8 - 10 rows of many sided keratinocytes with bundles of keratin intermediate filaments
  • contains Langerhans cells
A

Stratum Spinosum

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12
Q
  • Deepest layer, composed of single row of cuboidal or columnar keratinocytes that contain scattered tonofilaments
A

Stratum Basale

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13
Q
  • stem cells undergo cell division to produce new keratinocytes
  • melanocytes and tactile epithelial cells associated with tactile discs are scattered among keratinocytes
A

Stratum Basale

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14
Q

2 Layers of dermis (superficial to deep)

A

Papillary layer
Reticular layer

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15
Q

Small, nipple-shaped structure under epidermal layer, projects into the under surface of epidermis, Provides nourish to the epidermal layer and helps adhesion between epidermal and dermal layer

A

Dermal Papillae

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16
Q

Avascular or vascular: Epidermis

A

Avascular

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17
Q

Avascular or vascular: Dermis

A

Vascular

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18
Q
  • superficial portion of the dermis
  • consists of areolar connective tissue with thin collagen and five elastic fibers
  • contains dermal ridges that house blood capillary, corpuscles of touch, free nerve ending
A

Papillary region

19
Q
  • deeper portion of dermis
  • consist of dense connective tissue with thick collagen and course elastic fibers
  • spaces between fibers contain adipose cells, hair follicles, nerves sebaceous and sudoriferous glands
A

Reticular region/layer

20
Q

Other term for sudoriferous glands?

A

Sweat glands

21
Q

Other term of sebaceous gland?

A

oil glands

22
Q

Hair follicle surrounds the _____?

A

Hair root

23
Q
  • deep to the dermis, also known as subcutaneous layer
A

Hypodermis

24
Q
  • not actually part of the skin
  • consists of areolar and adipose tissues
  • fibers extend from dermis to anchor the skin to the subcutaneous layer
  • attaches to the underlying fascia
A

Hypodermis

25
Q

4 receptors of skin

A
  • free nerve ending
  • Meissner’s corpuscles
  • Pacinian Corpuscles
  • Hair follicle
26
Q
  • Papillary layer to epidermis
  • found in the papillary
  • Detects pain and extreme temperature
  • needed to maintain homeostasis
A

Free nerve ending

27
Q
  • “Touch corpuscles”
  • detects light touch and slow vibration
A

Meissner’s Corpuscles

28
Q
  • Detects pressure and fast frequency vibration
A

Pacinian Corpuscles

29
Q
  • Surrounds hair root
  • extends from under the skin to epidermis to hypodermis
  • detects light touch
A

Hair follicle

30
Q

Skin appendages

A
  • Hair shaft
  • hair root
  • hair bulb
  • arrector pili muscles
  • Eccrine sweat glands
  • Sebaceous glands
31
Q
  • superficial part of the hair that protrudes above the skin
A

Hair shaft

32
Q
  • deep portion of the staff that penetrates to the dermis and sometimes hypodermis
A

Hair root

33
Q
  • onion-shape, bottom of the hair root
A

Hair bulb

34
Q

Nipple-shaped protrusion on the hair bulb/root

A

Hair papilla

35
Q
  • Attached to the skin
  • Sudoriferous gland
A

Arrector Pili Muscles

36
Q

3 concentric layer of the hair

A
  • Medulla
  • cortex
  • cuticle
37
Q

Inner layer of hair; seen in thick-stranded hair

A

Medulla

38
Q

Outer layer of the hair

A

Cortex

39
Q
  • or “Piloerector muscle”
  • Smooth muscle responsible for goosebumps
A

Arrector Pili Muscle

40
Q
  • secretes oil or sebum
A

Sebaceous glands

41
Q

2 types of sweat glands

A

Eccrine, apocrine

42
Q

(sweat glands) more numerous, more abundant in palm, soles, forehead

A

eccrine sweat glands

43
Q

(sweat glands) found in axillary, anal, and genital area

A

Apocrine sweat glands

ANA PHY LAB (3 decks)

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