dermatology

Question 1

the structure that contracts to cause goose bumps

Answer 1

arrector pili

Question 2

a sensory structure that is found within the epidermis of the skin the the

Answer 2

Merkel cell

Question 3

stem cells in the epidermis are usually located in the stratum

Answer 3

germinativum/basale

Question 4

which skin cell or structure is not derived from epithelial tissue

Answer 4

sebaceous glands

Question 5

cells that produce vitamin D precursor are located in the

Answer 5

epidermis

Question 6

how thick is most of the skin

Answer 6

2mm

Question 7

which layer of the epidermis is made of up to 30 layers of dead cells

Answer 7

stratum corneum

Question 8

which cell is associated with touch

Answer 8

Merkel cells

Question 9

where in the skin does the fasted rate of mitosis happen

Answer 9

stratum basale

Question 10

which cells protect against toxins, microbes, and other pathogens

Answer 10

langerhans cells

Question 11

calluses are the result of accelerated multiplication of

Answer 11

keratinocytes

Question 12

the hypodermis usually has an abundance of this tissue

Answer 12

adipose tissue

Question 13

the reddish color of the skin of the lips is due to the pigment ___

Answer 13

hemoglobin

Question 14

the hair present only prenatally is called ___, most of which is replaced by ___ the time of birth

Answer 14

lanugo, vellus

Question 15

blood vessels in the ___ provide a hair with its sole source of nutrition

Answer 15

hair dermal papilla

Question 16

hair stages in order

Answer 16

anagen, catagen, telogen

Question 17

each hair grows in an oblique epithelial tube called a

Answer 17

hair follicle

Question 18

mitosis in the ___ accounts for growth of the nail

Answer 18

nail matrix

Question 19

the oil of your scalp is secreted by ___ glands associated with hair follicles

Answer 19

sebaceous glands

Question 20

___ is formed partly from the secretions of glands in the external ear canal

Answer 20

cerumen

Question 21

the cutaneous glands concerned with cooling the body are

Answer 21

merocrine glands/eccrine glands

Question 22

____ are a source of sex pheromones

Answer 22

apocrine glands

Question 23

what is the ‘ABCD’ rule

Answer 23

asymmetry, border irregularity, color, diameter

Question 24

the least common but most deadly type of skin cancer is

Answer 24

melanoma

Question 25

the most immediate threat to the life of a patient with severe burns is

Answer 25

infection and dehydration

Question 26

2 components of the skin

Answer 26

epidermis and dermis

Question 27

the most abundant cells in the epidermis are

Answer 27

keratinocytes

Question 28

the layer of the epidermis that contains cells undergoing division is the

Answer 28

stratum basale/germinativum

Question 29

which epidermal layer is found only in the skin of the palms, hands, and soles

Answer 29

stratum lucidum

Question 30

water loss due to interstitial fluid penetration through the surface of the skin is

Answer 30

insensinle perpiration

Question 31

which epidermal layer has melanocytes

Answer 31

stratum basale/germinativum

Question 32

the layer of the skin that contains the blood vessels and nerves closest to the surface of the skin is the

Answer 32

papillary layer

Question 33

what layer of skin contains bundles of collagen fibers and protein elastin and is responsible for the strength of the skin

Answer 33

reticular layer

Question 34

the layer of hard keratin that coats the hair is termed the

Answer 34

cuticle

Question 35

most body odor is the result of bacterial metabolism of the secretions produced by

Answer 35

apocrine sweat glands

Question 36

sensible perspiration is produced by

Answer 36

merocrine sweat glands

Question 37

the highest concentration of merocrine sweat glands would be found

Answer 37

on the palms of hands

Question 38

nail production occurs at the nail

Answer 38

root

Question 39

the nail body covers the

Answer 39

nail bed

Question 40

which layer of skin provides protection against bacteria

Answer 40

epidermis

Question 41

the repair of the dermis beings as fibroblasts produce

Answer 41

collagen fibers and ground substance

Question 42

____ are macrophages in the epidermis that are part of the immune system

Answer 42

langerhans cells

Question 43

merocrine sweat glands

Answer 43

secrete watery fluid onto the surface of the skin

Question 44

skin can repair effectively even after considerable damage has occurred because

Answer 44

stem cells persist in both epithelial and connective tissue components of the skin even after the injury

Question 45

characteristics of the epidermis inclue

Answer 45

multilayered, UV protection, self-repairing, flexible

Question 46

a surgical incision parallel to the lines of cleavage

Answer 46

closes and heals with relatively little scarring

Question 47

granulation tissue is made of

Answer 47

extracellular matrix, proteoglycans, hyaluronic acid, collagen and elastin

Question 48

what prevents skin from absorbing water

Answer 48

keratin

Question 49

which layer is avascular

Answer 49

epidermis

Question 50

which layer insulates deeper tissues from extreme temp. changes

Answer 50

subcutaneous connective tissue

Question 51

how do nutrients reach the epidermis

Answer 51

through diffusion through the tissue fluid from blood vessels in the dermis

Question 52

what tissue are fingernails derived from

Answer 52

osseous tissue

Question 53

in the stratum ___ of thin skin, keratinocytes release glycolipids by exocytosis

Answer 53

spinosum

Question 54

what are the 5 layers of the epidermis from top to bottom

Answer 54

stratum corneum, stratum lucidum (thick skin), stratum granulosum, stratum spinosum, stratum basale.