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Flashcards in Chapter 5 Deck (50):
1

what makes up the integumentary system?

epidermis, dermis, hair, nails, sweat glands, sebacous glands, NOT subcutaneous

2

describe the epidermis

composed of stratified squamous epithelium

3

Keratinocytes are the predominant cells in the:

Epidermis

4

The function of keratin is to:

Make skin tough and waterproof

5

What makes up the stratum basale and what is its function?

Stratum germatibum, same as stratum basale

6

What is the correct arrangement of the epidermis?

Keratinocytes, melanocytes, langerhans cells, and merkal cells.
Superficial to deep (stratum corneum)

7

Which layer of the epidermis consists of 25-30 layers of dead, flattened keratinocytes?

Stratum corneum

8

What is present in thick skin but not in thin skin?

Stratum lucidem

9

What is involved in skin grafts and when are they used?

Transfer of a patch of healthy skin taken from a donor site to cover a wound.

10

The average length of time for a cell to be produced by the stratum basale, rise to the surface, become keratinized, and slough off is about how long?

one month

11

What is psoriasis?

Skin disorder keratinocytes reproduce too quickly

12

Describe the dermis.

Contains fibroblasts, macrophages, adipocytes

13

What is the superficial portion of the dermis?

Papillary region, includes touch receptors called messener corpusels

14

What is the reticular region of the dermis?

Collegen and elastic fibers

15

What are fingerprints and why are they unique

Unique to each individual and constant in pattern throughout life

16

What is a benign, localized overgrowth of melanocytes that usually appears during childhood or adolescence?

nevis/mole

17

A patient with liver disease has elevated level of bilirubin in his blood. How may the presence of bilirubin affect his skin color?

Cause his skin to turn yellow like being jaundiced

18

An obstetrician has just delivered a baby boy and is concerned because he is cyanotic. Which of the following statements explains the term cyanotic and why the doctor is concerned?

Cyanotic means that the skin and mucous membranes have an abnormal bluish tint. Cyanotic skin and mucous membranes reflect a lack of adequate oxygen circulation in the tissues.
--Bluish tint, lack of o2

19

An individual born without the ability to make the enzyme tyrosinase has what condition? A) vitiligo B) albinism C) jaundice D) cyanosis E) erythema

B

20

What is tattooing and what does it effect?

Ink particles into dermis

21

What are the dangers of body piercing?

Jewelry, year to healing, cartilage deformation, interfere with medical produceders

22

What are the accessory structures of the skin?

Merkal disks, (hair, sebaceous glands, nails)

23

What constitutes true of hair?

Not, composed of living cells

24

What is the function of hair?

Protect, light touch, protects nostrils, ear canals

25

What are the functions of the structures of hair?

Erector pilli muscle raise hair in response to cold, or emotional stress

26

Which of the following is true of hair growth?

Normal hair loss for old people is 100 hairs a day

27

When do hair follicles develop?

NOT between 9-10 days after conception

28

Which people are most likely to have white hair?

Albino, those who produce air bubbles in the hair shaft

29

what is sebum?

Produced by sebaceous gland, attached to hair follicles

30

What is acne?

Inflammation of sebaceous glands

31

What is the function eccrine sudoriferous glands?

Assists regulation of body temperature

32

What is the function of epocrine sudoriferous glands?

Auxiliary, inguinal, areoler, bearded region of face

33

What is the function ceruminous glands?

Earwax production

34

Explain what true nails are

Not non keratinized, they are keratinized

35

How does thin skin compare to thick skin?

Thin skin has fewer sensory receptors than thick skin

36

What is the function of the skin?

Excretes waste products, first line of defense, regulates body temp, vitamin D
NOT MAKES VITAMIN A

37

How does skin contribute to regulation of body temperature?

Perspiration, evaporates, altering blood flow to dermis

38

In ways does the skin protect?

Does NOT Promote dehydration

39

What are cutaneous sensations?

touch, pressure, itch, tickle

40

What does the skin excrete?

Sweat, salts, ammonia, urea, carbon dioxide, heat, CO2, water

41

A pharmaceutical company wants to create new medications that may be administered transdermally. Based on your knowledge of what the skin can absorb, which of the following products is a good candidate for transdermal delivery?

Lipid soluble analgesic related to lidocaine

42

What takes place in epidermal wound healing?

Requires basal cells detach from basement membrane

43

What are the phases required for deep wound healing?

Inflammatory phase (inflammation), migratory phase, proliferative phase, maturation phase

44

Explain wound healing processes.

All of the following except, epidermal wound healin usually results in fibrosis

45

What are the steps of the development of the integumentary system?

Epidermis develops from ectoderm,
46

46

How does aging affect the integumentary system?

Elasticity and extensibility decreases

47

How does the integumentary system integrate with the other body systems?

Cutaneous allows nervous to detect environment and maintain homeostasis

48

What are examples of skin cancers?

Basal cell carcinomas, squamous cell carcinomas, malignant melanomas
No, melanoma is the most dangerous and not the most common

49

What is true of burns?

the systemic effects of a major burn are a greater threat to life than the local effect of a burn (p. 175) because the body can go into shock, large losses of fluids

50

Who is most likely to develop a pressure ulcer?

Paralyzed individual, poor circulation, improper care, bedridden