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BIOSCI > Exercise 5: Integumentary System (Lab) > Flashcards

Exercise 5: Integumentary System (Lab) Flashcards

1
Q

Composed of epithelial tissue

A

Outer epidermis

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2
Q

Connective tissue that is firmly attached to the epidermis by a basement membrane

A

Deep dermis

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3
Q

Another layer found immediately beneath the skin but it is not a part of the skin

A

Hypodermis

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4
Q

Also refereed as subcutaneous or Sub-Q

A

Hypodermis

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5
Q

Stratas of the epidermis

A 
Corneum
Lucidum
Granulosum
Spinosum
Basale
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6
Q

Outermost layer of the skin

A

Stratum corneum

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7
Q

Consists of 25 to 30 or more layers of dead squamous cells

A

Stratum corneum

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8
Q

Layers of dead squamous cells

A

Keratinocytes

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9
Q

Waterproof, tough, and continuously undergoes sloughing off

A

Stratum corneum

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10
Q

Contains three to five rows of dead, flat keratinocytes, dying keratinocytes

A

Stratum granulosum

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11
Q

No dividing cells found in this layer

A

Stratum granulosum

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12
Q

Composed of eight to 10 rows of cells which are mainly keratinocytes

A

Stratum spinosum

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13
Q

Often seen with thorn-like projections caused by the process of tissue preparation in stained slides

A

Stratum spinosum

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14
Q

Deepest layer of the epidermis

A

Stratum basale / stratum germinativum

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15
Q

Made up of a single row of cells attached to the basement membrane

A

Stratum basale

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16
Q

Cells actively undergo Mitotic division to form new keratinocytes

A

Stratum basale

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17
Q

Made up of the papillary and reticular layers

A

Dermis

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18
Q

Composed of areoles connective tissue

A

Dermis

19
Q

Finger-like projections in the papillary layer that extend to the epidermis

A

Dermal papillae

20
Q

Deeper and much thicker region of the dermis

A

Reticular layer

21
Q

Composed of dense irregular connective tissue

A

Reticular layer

22
Q

Provide the skin with strength and elasticity respectively

A

Collagen fibers and elastic fibers

23
Q

Accessory structures associated with the skin

A

Hair, nails, and skin glands

24
Q

Superficial portion of the hair

A

Shaft

25
Q

Projects from the surface of the skin

A

Hair shaft

26
Q

Found deep into the shaft and penetrates the dermis and sometimes the hypodermis

A

Hair root

27
Q

Three layers of the hair and the hair root

A

Inner medulla
Middle cortex
Outer cuticle

28
Q

Composed of keratinized, tightly packed epidermal cells that cover the dorsal surface of the distal portion of each digit

A

Nails

29
Q

Visible portion of the nail

A

Nail body

30
Q

Portion of the nail that extends past the digit

A

Free edge

31
Q

Part that is embedded in the fold of the skin

A

Nail root

32
Q

Half moon whitish proximal area of the nail

A

Lunula

33
Q

Beneath the free edge which secures the nail

A

Hyponychium

34
Q

Narrow band of epidermis that adheres to the nail

A

Eponychium

35
Q

Equipped with different kinds of exocrine glands

A

Skin

36
Q

Different kinds of exocrine glands

A

Mammary glands
ceruminous glands
sebaceous glands
sweat glands

37
Q

Also called sudoriferous glands

A

Sweat glands

38
Q

Two types of sweat glands

A

Eccrine glands

Apocrine glands

39
Q

Most common than apocrine sweat glands

A

Eccrine sweat glands

40
Q

Appear as simple coiled tubular glands which number around 3000 per square inch and produce about 600 ml of sweat per day

A

Eccrine sweat glands

41
Q

They were once thought to release their secretions by pinching off a portion of their cytoplasm

A

Apocrine glands

42
Q

Release their secretions via exocytosis which is characteristic of merocrine glands

A

Apocrine glands

43
Q

Secretions of apocrine gland

A

Cold sweat

44
Q

Human skin is composed of two distinct regions

A

Outer epidermis

Inner dermis

BIOSCI (8 decks)

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