Integumentary System Flashcards

1
Q

What are the functions of nails?

A

To serve as hard protective plates that help prevent skin of fingers or toes from getting cut/scraped during daily activities, enhance sensation and precision of movements

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2
Q

Ungu/o
Onych/o

A

Nail

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3
Q

What is H and what is its function?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Sebaceous gland
Excretes sebum which:
- Keeps hair follicles soft and pliable
- Has bactericidal + fungicidal properties, preventing infection
- Lubricates skin to prevent evaporation of water which can lead to dryness and cracking

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4
Q

What is E?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Sudoriferous/sweat gland (eccrine)

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5
Q

Name the 5 components of the integumentary system

A

Skin, hair, nails, glands, ducts

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6
Q

Describe the structure of nails

A

Hard protective keratin plates consisting of the eponychium (cuticle), hyponychium (below cuticle), perionychium (around cuticles)

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7
Q

Describe 3rd-degree burns

A

Damage epidermis, dermis, hypodermis, dry skin because sweat glands in dermis are destroyed, muscle and bone may be visible, little to no pain because nerve endings in dermis are already destroyed

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8
Q

Explain how the integumentary system helps with the formation of vitamin D

A
  • Skin exposed to UV light which initiates formation of vit D
  • This helps with producing calcium for strong bones etc
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9
Q

Compare apocrine vs eccrine glands

A
  • Eccrine: open to skin, smaller, more numerous, thermoregulation
  • Apocrine: open to hair, larger, less numerous, acted upon by bacteria > produce odour
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10
Q

5 ways to maintain a healthy integumentary system

A
  1. Appropriate hygiene e.g. washing hands regularly to remove potential pathogens from skin
  2. Eat a well-balanced diet e.g. water helps maintain skin elasticity
  3. Protect skin e.g. sunscreen to decrease damage to epidermis
  4. Moisturise skin to maintain skin integrity/prevent dryness and cracking
  5. Regularly examine skin so any abnormalities are detected earlier = greater chance of successful treatment
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11
Q

Locations of sebaceous glands

A

Scalp, face, groin, armpit (not on palms and soles)

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12
Q

Describe how the integumentary system helps with excretion

A
  • Sudoriferous (excrete sweat> SALT AND WATER) glands: curly, apocrine open to hair follicle, eccrine open to skin
  • Sebaceous (oil) glands- attach to hair, EXCRETE sebum (oil)
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13
Q

Acronym for function of integumentary system

A

PASTED - protection, absorption, sensation, thermoregulation, excretion, vitamin D

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14
Q

What is B and describe its structure

A

Epidermis
- Most superficial layer of skin, contains melanocytes (synthesise melanin> pigment that gives skin colour), and keratinocytes (synthesise keratin for waterproof skin) no blood vessels, nerves or hair

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15
Q

Duct vs pore

A

Ducts are pathways for sebum/sweat whereas pores are openings to the skin

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16
Q

What is A?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Sweat pore

17
Q

Describe 3 ways in which the integumentary system helps with thermoregulation

A
  • Vasodilation/constriction: blood vessels widen/narrow to increase/decrease blood flow TO SKIN to increase/decrease heat loss by radiation
  • Excretion of sweat: evaporation helps to increase heat loss by evaporation
  • Piloerection/relaxing of hairs due to arrector pili muscles: erect/relaxed hairs trap/don’t trap air to prevent/encourage heat loss by radiation

All 3 help increase/decrease body temperature back to WNL

18
Q

Describe how the integumentary system helps with absorption

A

Helps with absorption of drugs (eg HRT and nicotine patches) and toxic chemicals e.g. Mercury since they shouldn’t go directly into the bloodstream

19
Q

Dermat/o
Seb/o

A

Skin
Sebum (oil)

20
Q

Describe 2nd degree burns

A

Damage epidermis and dermis, moist skin because sweat glands in dermis become damaged, severe to extreme pain involve because dermis contains nerve endings

21
Q

Main function of integumentary system

A

Intact skin barrier provides protection from external environment by preventing entry of pathogens/chemicals/UV light etc which prevents disease

22
Q

What is C and describe its structure

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Dermis
- 2nd most superficial layer of skin, contains collagen, connective tissue, blood vessels, nerves, sweat glands and ducts, sebaceous (oil) glands, hair, arrector pili muscles

23
Q

Describe how the integumentary system helps with sensation

A

Nerve endings in dermis act as sensory receptors:
- Mechanoreceptors: detect touch and pressure
- Thermoreceptors: detect temperature
- Nociceptors: detect pain

24
Q

What are the 3 layers of the integumentary system?

A

Epidermis, dermis, subcutaneous/hypodermis (technically not part of skin)

25
Q

What is F?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Artery

26
Q

Derm/o
Trich/o

A

Skin
Hair

27
Q

What is I?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Arrector pili muscle

28
Q

Cutane/o
Pil/o

A

Skin
Hair

29
Q

Describe 1st degree burns

A

Only damage epidermis, dry skin, can be tender to severely painful

30
Q

Describe the 3 functions of hair

A
  • Thermoregulation: Piloerection/relaxing of hairs due to arrector pili muscles- erect/relaxed hairs trap/don’t trap air to prevent/encourage heat loss by radiation > bring temp back to WNL
  • Protection: against sunburn (eg hair on head), debris (eyelashes), pathogens (nostril hair)
  • Provide sensory info: vestibular system in inner ear detects head movements
31
Q

What is G?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Vein

32
Q

What is D and what is its structure and function?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Subcutaneous/hypodermis
- S = comprised of adipose (fat) tissue, areolar (collagen) tissues
- F = insulation, energy store and shock absorber

33
Q

What is J?

Doherty, 2010 – retrieved and adapted from https://commons.wikimedia.org/wiki/File:Structure_of_mammalian_skin_and_the_layers_typically_present_in_parchment.png. This work is openly licensed by CC BY-SA 4.0.
A

Hair shaft

34
Q

Describe the structure of hair

A

Keratin filaments with a root and shaft, attached to an arrector pili muscle

35
Q

Dermatology

A

Study of skin and diseases of the skin

36
Q

Onycholysis

A

Loosening/separation of a nail from the nail bed

37
Q

Hidr/o
Therm/o

A

Sweat
Heat

38
Q

Diaphor/o
Melan/o

A

Sweat
Black

39
Q

Where is the papillary layer?

A

Dermis