wk 2: integumentary system

Question 1

what are the main structures of the integumentary system?

Answer 1

• skin
• hair
• nails
• cutaneous glands

Question 2

what are the layers of the skin?

Answer 2

• epidermis (most superficial layer)
• dermis (“true skin”)
• hypodermis (subcutaneous layer)

Question 3

name the layers of the epidermis from deep to superficial.

Answer 3

• stratum basale
• stratum spinosum
• stratum granulosum
• stratum lucidum
• stratum corneum

Question 4

fx: stratum basale

Answer 4

has cells that constantly divide to replace dead ones

Question 5

fx: stratum corneum

Answer 5

dead keratinocytes; hydrophobic

Question 6

the dermis contains…

Question 7

the cutaneous glands contain…

Answer 7

the sweat and sebaceous glands

Question 8

sebaceous glands release…

Answer 8

sebum

Question 9

name four types of sweat glands.

Answer 9

• ceruminous
• merocrine
• apocrine
• mammary

Question 10

cerumen glands produce…

Answer 10

earwax

Question 11

merocrine glands produce and secerte…

Question 12

apocrine glands produce and secerte…

Question 13

mammary glands produce and secerte…

Question 14

what are the functions of the integumentary system?

Answer 14

• protect against UV rays and pathogens
• vitamin D production
• temperature regulation
• nonverbal communication (e.g. blushing)
• sensation (feeling)
  water retention

Question 15

why is pain an important sensation?

Answer 15

pain prevents further damage

Question 16

burns are categorized by…

Answer 16

degree and extent

Question 17

first degree burns

Answer 17

only in epidermis (redness)

Question 18

second degree burns

Answer 18

involves epidermis and dermis (blisters)

Question 19

third degree burns

Answer 19

involves all skin layers (charred)

Question 20

how is the extent of a burn measured?

Answer 20

by the rule of 9’s

Question 21

basal cell carcinoma

Answer 21

• most common
• superficial and does not metastasize

Question 22

squamous cell carcinoma

Question 23

melanoma

Answer 23

most lethal because it can spread

Question 24

cellulitis

Answer 24

• bacterial
• most common adult skin infection

Question 25

impetigo

Answer 25

• bacterial
• pediatric rash that forms a crust covering

Question 26

verruca

Answer 26

• viral
• warts
• caused by HPV (human papilloma-virus)

Question 27

oral herpes

Answer 27

• ## viral

Question 28

genital herpes

Answer 28

• ## viral

Question 29

chickenpox

Answer 29

• viral
• caused by a varicella infection

Question 30

shingles

Answer 30

• viral
• caused by herpes zoster (a reactivation of varicella)

Question 31

tinea

Answer 31

• fungal
• ringworm

Question 32

scabies

Answer 32

• parasites
• itchy skin rash

Question 33

bed bugs

Answer 33

• parasites
• “cimex”

Question 34

psoriasis

Answer 34

• autoimmune
• immune system attacks keratin

Question 35

slceroderma

Answer 35

• autoimmune
• immune attack on collagen

Question 36

urticaria

Answer 36

• hypersensitivity (acute)
• a.k.a. hives

Question 37

atopic dermatitis

Answer 37

• hypersensitivity (chronic)
• a.k.a. eczema

Question 38

kaposi sarcoma

Answer 38

• immunodeficiency
• skin infection that ONLY happens to immunocompromised