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BIOLOGY 2ND QUARTER > Integumentary System > Flashcards

Integumentary System Flashcards

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1
Q

Integumentary system came from the word “integumente” which means?

A

To cover

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2
Q

These are the parts of the Integumentary system. (3)

A

Skin, Nails, Hair

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3
Q

This is the main organ of the Integumentary system. Its main function is to protect our body from external damage.

A

Skin

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4
Q

These are the layers of the skin. (3)

A

Epidermis, Dermis, Hypodermis

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5
Q

This is the outermost layer of the skin.

A

Epidermis

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6
Q

This is the middle layer of the skin.

A

Dermis

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7
Q

This is the layer of the skin that contains fats where heat is insulated

A

Hypodermis

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8
Q

These are the cells in the skin. (4)

A

Keratinocytes, Melanocytes, Merkel, Langerhans’

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9
Q

This cell of the skin produces keratin. This is the most abundant cell in the skin.

A

Keratinocytes

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10
Q

This cell synthesizes the pigment melanin.

A

Melanocytes

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11
Q

This cell arises from the bone marrow.

A

Langerhans’

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12
Q

This cell is associated with sensory nerve endings.

A

Merkel

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13
Q

This is for pigmentation and protection.

A

Melanin

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14
Q

These are the layers of Epidermis. (5)

A

Stratum Corneum, Stratum Lucidum, Stratum Granulosum, Stratum Spinosum, and Stratum Basale

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15
Q

This layer accounts for 3/4 of the epidermal thickness. It is the durable “overcoat” for the body.

A

Stratum Corneum

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16
Q

This layer is usually hairless and extra thick. It is found in palms and soles. It is a thin, translucent band of clear, fat, dead keratinocytes.

A

Stratum Lucidum

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17
Q

These layers are highly keratinized. (2)

A

Stratum Granulosum and Stratum Spinosum

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18
Q

In this layer, cells undergo cell division.

A

Stratum Basale

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19
Q

These are the layers of the dermis. (2)

A

Papillary and Reticular

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20
Q

This layer of dermis has collagen and elastic fibers that form a loosely woven mat that is heavily invested with blood vessels.

A

Papillary

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21
Q

This layer of dermis accounts for 4/5 of dermal thickness. This contains thick bundles of interlacing collagen fibers.

A

Reticular

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22
Q

This accumulates in Stratum Corneum and in fatty tissue of hypodermis.

A

Carotene

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23
Q

These are the glands of the skin. (2)

A

Sweat Glands and Oil Glands

24
Q

This gland of the skin contains eccrine (found in palms, soles, and forehead) and apocrine (found in axillary and anogenital areas). Include its other name.

A

Sweat Glands or Sudoriferous

25
Q

This gland of the skin is found all over except on palms and soles. It secrets sebum. Include its other name.

A

Oil Glands or Sebaceous

26
Q

This lubricates hair and skin and kills bacteria.

A

Sebum

27
Q

These are flexible strands produced by hair follicles which consists largely of dead keratinized cells.

A

Hair

28
Q

It is another term for hair.

A

Pili

29
Q

It is part of the hair that projects from skin.

A

Shaft

30
Q

It is the part of the hair which is embedded in skin.

A

Root

31
Q

These are the parts of the hair. (4)

A

Root Hair Plexus, Hair Matrix, Hair Papilla, and Arrector Pili

32
Q

This part is a knot of sensory nerve endings that wrap around each hair bulb.

A

Root Hair Plexus

33
Q

This part produces the hair.

A

Hair Matrix

34
Q

This part supplies nutrients and signals growth.

A

Hair Papilla

35
Q

This part is for goosebumps and for heat retention and protection mechanism.

A

Arrector Pili

36
Q

These are the types of the hair. (2)

A

Vellus and Terminal

37
Q

This type is the body hair of children and adult females. It is pale and fine.

A

Vellus

38
Q

This type appears at puberty in axillary and pubic regions. This grows in response to sex hormones.

A

Terminal

39
Q

It is a scalelike modification of the epidermis. It forms a clear protective layer on the distal part of your fingers and toes.

A

Nail

40
Q

These are the parts of the nail. (4)

A

Free edge, Nail Matrix, Nail Folds, Cuticle

41
Q

This part of the nail is the visible portion.

A

Free edge

42
Q

This part of the nail is the thickened proximal portion of nail bed.

A

Nail Matrix

43
Q

This part of the nail is the border of nail overlapped by skin.

A

Nail Folds

44
Q

This part of nail is the proximal nail folds that projects onto nail body.

A

Cuticle

45
Q

This is for the toughness and hydrating skin.

A

Collagen (fibers?)

46
Q

This is for the elasticity of the skin.

A

Elastic fibers

47
Q

This senses the debris on skin.

A

Hair follicle

48
Q

This hair guards the head against physical trauma, heat loss and sunlight.

A

Hair on scalp

49
Q

This hair shields eyes from dust and debris.

A

Eyelashes

50
Q

This hair filters dust and protects against small insects from entering nostrils.

A

Nose Hairs

51
Q

This hair shields eyes.

A

Eyebrow

52
Q

This hair keeps certain areas of body warm

A

Pubic Hair

53
Q

These are the phases of the hair. (3)

A

Anagen, Catagen, Telogen

54
Q

This phase makes hair divides rapidly(???). Hair is premature.

A

Anagen

55
Q

This phase signals end of growth. It lasts for 2-3 weeks.

A

Catagen

56
Q

In this phase, hair follicles are at rest. Club hair is completely formed.

A

Telogen

BIOLOGY 2ND QUARTER (8 decks)

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