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Integumentary > Integumentary > Flashcards

Integumentary Flashcards

1
Q

The scientific study and medical treatment of the integumentary system

A

Dermatology

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2
Q

Accessory organs of the skin are

A

Hairs nails oil and sweat glands

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3
Q

Functions of the skin

A

Protection, temperature, excretion, vitamin d synthesis, Sensory reception, storage

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4
Q

The body’s largest and heaviest organ

A

Skin

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5
Q

Two layers of skin are

A

Epidermis and dermis

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6
Q

Hypodermis

A

Below not part of skin

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7
Q

Thick skin is found

A

Palms of hand and sole of feet

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8
Q

Thin skin

A

Covers rest of the body (hair follicles, sebaceous glands and sweat glands

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9
Q

Epidermis is composed of

A

Dry keritanized stratified squamous epithelium

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10
Q

Five layers of epidermis and there functions

A

Stratum basale
Function- divide, mitosis of stem cells.
Stratum spinousum
Function- strength and flexibility

Stratum granulosum
Function strength and flexibility contains coarse dark staining kerathoyalin granules
Stratum lucidum
Stratum corneum
Function- protects underlying skin from infection dehydration h2o poss chemical and physical stress
3-5 layers of flattened, translucent dead cells found only in thick skin palms and soles

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11
Q

Accounts for 15% of body weight

A

skin

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12
Q

A pigment produced by melanocytes

A

Melanin

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13
Q

A red pigment found in hemoglobin of red blood cells

A

Heme

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14
Q

Epithelial tissue pinches off to form ductless endocrine glands found with in connective tissue

A

Endocrine glands

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15
Q

Hypodermic sub q injections are administered here because this layer is highly vascular and drugs are absorbed quickly

A

Hypodermis

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16
Q

Composed of a regular dense connective tissue you containing fibroblast bundles of collagen and of course elastic fibers

A

Reticular layer of dermis

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17
Q

Composed of areas ct capillary loops meissner corpuscles and free nerve endings

A

Papillary layer of dermis

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18
Q

Consists of 3-5 layers of flattened keratinocytes undergoing apoptosis

A

Stratum granulosum

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19
Q

Consists of 3-5 layers of flattened translucent dead cells found only in thick skin palms and soles

A

Stratum lucidum

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20
Q

Consists of 15-30 layers of dead, flattened cells filled with keratin ; flake off as tiny specs of dander every two weeks

A

Stratum corneum

21
Q

Single layer of cuboidal to low columnar stem cells and keratinocytes that lie on basement membrane

A

Stratum basale

22
Q

Consists of 8-10 layers of kerantinocytes held together by desmosomes; some maintain capacity to divide

A

Stratum spinosum

23
Q

These glands are large And active at puberty

A

Apocrine (odiferous) glands

24
Q

Simple tubular glands found over entire body

A

Eccrine (merocrine ) sweat glands

25
Q

Found at base of hair follicle, secrete sebum into hair follicle

A

Oil (sebaceous) glands

26
Q

Visible portion the projects from skin

A

Hair shaft

27
Q

Dead keratinized threads of epidermal cells cemented together

A

Hair(pili)

28
Q

Visible portion the projects from skin

A

Hair shaft

29
Q

Below skin surface penetrates dermis and hyper dermis

A

Hair root

30
Q

Sensory nerve endings (receptors) around hair follicle detect movement ( light touch)

A

Hair root plexuses

31
Q

Smooth muscle attached half way down hair follicle

A

Arrector pili

32
Q

What do eyelashes do

A

Screen out foreign agents

33
Q

What do eyebrows do

A

Preevent sweat from dripping into eyes

34
Q

Trap dust and other large particles

A

Nostrils

35
Q

Prevent heat loss

A

Scalp

36
Q

Visible portion flattened keratinized dead cellsof stratum corneum filled with harder type of keratin; pink due to underlying capillaries

A

Nail Body

37
Q

Cemented plates of hard keratinized dead epidermal cells

A

Nails

38
Q

Extends past finger appears white because no underlying capillaries

A

Free edge

39
Q

Lies within nail fold

A

Nail root

40
Q

Semilunar portion is white due to thickened stratum basale below

A

Lunula

41
Q

Thin layer of stratum corneum at base of nail

A

Eponychium (cuticle)

42
Q

Beneath free edge thickened region of stratum corneum that secures nail to fingertip

A

Hyponychium (nail bed)

43
Q

Where new growth arises rate of nail growth is influenced by persons age health nutritional status and season

A

Nail matrix

44
Q

Respond to pain and temperature

A

Free nerve endings

45
Q

Receptors for light touch in papillary

A

Meissner a corpuscles

46
Q

Receptors for sustained (deep) pressure

A

Pacinian corpuscles

47
Q

specialized epithelial cells in stratum basale, in conjunction with nerve endings receptors for touch.

A

Merkel discs

48
Q

Protect tips of fingers and toes and allow one to manipulate objects

A

Nails

49
Q

What are the 3 layers of hair shaft and root

A

medulla- 2-3 rows of irregular shapes cells that contain soft keratin and melanin

Cortex- bulk of shaft; elongated cells contain hard keratin and melanin

Cuticle- single layer of thin, flat cells contain hard keratin and overlay to form shingles

Integumentary (3 decks)

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