Deck 6: The Integumentary System

Question 1

Most of the skin is __________ mm thick.

A) 0.01 to 0.02
B) 0.1 to 0.2
C) 1 to 2
D) 10 to 20
E) 100 to 200

Answer 1

C

Question 2

The acidity of sweat contributes to the acid mantle that inhibits bacterial growth in the skin.

Answer 2

True

Question 3

Straight hair is round,wavy hair is oval,and curly hair is relatively flat.

Answer 3

True

Question 4

Pattern baldness is relatively rare in women because women have lower testosterone levels than men.

Question 5

Albinism is the genetic lack of melanin that results in a milky white coloration of the skin.

Question 6

The youngest keratinocytes are found in the stratum basale.

Question 7

Debridement is not necessary to infection control.

Question 8

The deeper of the two layers of the skin is the hypodermis.

Question 9

Which of the following is not found in the epidermis?

A) Melanocytes
B) Fibroblasts
C) Stem cells
D) Keratinocytes
E) Tactile cells

Question 10

The three forms of skin cancer are defined by the types of cells from which they originate.

Question 11

Skin covering the __________ has sweat glands but no hair follicles or sebaceous glands.

A) forearm
B) buttocks
C) abdomen
D) fingertips
E) back

Question 12

Merocrine sweat glands are associated with hair follicles in the pubic and anal regions,axilla,areola,and beard.

Question 13

The skin carries out the first step in the synthesis of vitamin
D.

Question 14

In which of the following skin layers would a subcutaneous injection be administered?

A) Stratum basale
B) Stratum spinosum
C) Stratum corneum
D) Dermis
E) Hypodermis

Question 15

Melanin,hemoglobin,and carotene give color to the skin.

Question 16

Embarrassment can be perceived by an abnormal coloration of the skin called cyanosis.

Question 17

Which of the following is not part of the skin?

A) Epidermis
B) Papillary layer
C) Hypodermis
D) Stratum basale
E) Dermis

Question 18

Hair and nails are composed of collagen.

Question 19

Living keratinocytes exfoliate from the epidermis as tiny specks called dander.

Question 20

Freckles are elevated patches with an abnormal coloration of the skin.

Question 21

The reddish color of the skin of the lips is primarily due to the presence of which pigment?

A) Hemoglobin
B) Myoglobin
C) Melanin
D) Carotene
E) Keratin

Question 22

What type of tissue is found in the most superficial layer of skin?

A) Simple squamous epithelium
B) Stratified squamous epithelium
C) Dense irregular connective tissue
D) Areolar connective tissue
E) Dense regular connective tissue

Question 23

Which of the following cells stand guard against toxins,microbes and other pathogens?

A) Keratinocytes
B) Melanocytes
C) Adipocytes
D) Dendritic cells
E) Tactile cells

Question 24

Which skin color is most likely to result from anemia?

A) Pallor
B) Erythema
C) Hematoma
D) Albinism
E) Jaundice

Question 25

Increased bilirubin levels cause a skin discoloration called __________.

A) erythema
B) jaundice
C) pallor
D) bronzing
E) cyanosis

Question 26

The hypodermis is characterized by an abundance of which tissue?

A) Statified squamous epithelium
B) Smooth muscle
C) Nervous tissue
D) Adipose tissue
E) Dense irregular connective tissue

Question 27

Which of the following best describes the composition of the dermis?

A) Collagen and living keratinocytes
B) Collagen and dead keratinocytes
C) Collagen and fibroblasts
D) Elastic fibers and melanocytes
E) Elastic fibers and dendritic cells

Question 28

The fastest rate of mitosis happens in the __________.

A) stratum basale
B) stratum spinosum
C) stratum granulosum
D) stratum lucidum
E) stratum corneum

Question 29

Which of the skin layers below is the most superficial?

A) Basal lamina
B) Epidermis
C) Papillary layer
D) Reticular layer
E) Hypodermis

Question 30

Fingerprints left on things we touch are associated with our __________.

A) dermal papillae
B) dermal connective tissue
C) stratum basale
D) subcutaneous tissue
E) subcutaneous adipose

Question 31

Looking at a slide of thin skin under the microscope,you note that the stratum basale is the __________ layer of the epidermis in from the surface.

A) second
B) third
C) first
D) fifth
E) fourth

Question 32

The __________ is absent from most epidermis.

A) stratum basale
B) stratum spinosum
C) stratum granulosum
D) stratum lucidum
E) stratum corneum

Question 33

Calluses or corns are the result of accelerated multiplication by ___________.

A) melanocytes
B) keratinocytes
C) fibroblasts
D) tactile cells
E) red blood cells

Question 34

Which layer of the epidermis consists of up to 30 layers of dead cells?

A) Stratum basale
B) Stratum spinosum
C) Stratum granulosum
D) Stratum lucidum
E) Stratum corneum

Question 35

Leather is made of the __________ layer of the dermis.

A) areolar
B) keratin
C) reticular
D) collagen
E) papillary

Question 36

The skin discoloration most likely to suggest physical abuse is __________.

A) pallor
B) albinism
C) erythema
D) hematoma
E) jaundice

Question 37

Which of the following cells is largely responsible for skin color?

A) Dendritic cell
B) Keratinocyte
C) Melanocyte
D) Tactile cell
E) Dead keratinocyte

Question 38

A __________ is an elevated patch of melanized skin.

A) hemangioma
B) mole
C) freckle
D) flexion line
E) friction ridge

Question 39

Which of the following are associated with the sense of touch?

A) Fibroblasts
B) Melanocytes
C) Keratinocytes
D) Dendritic cells
E) Tactile cells

Question 40

Ethnic differences in skin color are primarily caused by differences in ___________.

A) UV radiation exposure
B) the quantity of hemoglobin carried in the blood
C) the quantity of melanin produced
D) the number of melanocytes
E) the number of keratinocytes

Question 41

A pilus is a __________.

A) hair
B) hair follicle
C) tiny muscle that moves a hair
D) sensory nerve fiber around the base of a hair
E) gland associated with a hair follicle

Question 42

Which two strata of the epidermis are most susceptible to cancer?

A) Stratum corneum and stratum lucidum
B) Stratum basale and stratum corneum
C) Stratum spinosum and stratum basale
D) Stratum granulosum and stratum spinosum
E) Stratum lucidum and stratum granulosum

Question 43

The narrow zone of dead skin overhanging the proximal end of a nail is called the __________.

A) eponychium
B) lunule
C) nail plate
D) nail body
E) nail root

Question 44

Mammary glands are modified __________ glands that develop within the female breasts.

A) merocrine
B) apocrine
C) ceruminous
D) sebaceous
E) eccrine

Question 45

Blood vessels in the __________ provide a hair with its sole source of nutrition.

A) bulb
B) root
C) shaft
D) dermal papilla
E) medulla

Question 46

A hair cycle consists of three developmental stages in which order?

A) Anagen,telogen,and catagen
B) Anagen,catagen,and telogen
C) Catagen,anagen,and telogen
D) Catagen,telogen,and anagen
E) Telogen,anagen,and catagen

Question 47

Variations in hair color arise from differing amounts of __________.

A) collagen and elastic filaments
B) keratin and melanin
C) carotene and hemoglobin
D) carotene and collagen
E) eumelanin and pheomelanin

Question 48

Which cutaneous glands are concerned with cooling the body?

A) Ceruminous glands
B) Sebaceous glands
C) Merocrine glands
D) Apocrine glands
E) Exothermic glands

Question 49

Looking at a slide of axillary skin under the microscope,you notice the presence of __________ glands that are absent on slides of the scalp.

A) merocrine
B) apocrine
C) sebaceous
D) ceruminous
E) perspiration

Question 50

Excessive hairiness is called __________.

A) telogenism
B) anagenism
C) catagenism
D) alopecia
E) hirsutism

Question 51

Secretions from __________ glands contribute to the acid mantle that inhibits bacterial growth on the skin.

A) mammary
B) ceruminous
C) sebaceous
D) apocrine sweat
E) merocrine sweat

Question 52

The oil of your scalp is secreted by __________ glands associated with the hair follicles.

A) merocrine sweat
B) apocrine sweat
C) sebaceous
D) ceruminous
E) eccrine sweat

Question 53

The __________ glands are a source of sex pheromones.

A) ceruminous
B) merocrine
C) mammary
D) sebaceous
E) apocrine

Question 54

What is the white opaque "moon" often found at the proximal end of a fingernail called?

A) Free edge
B) Nail body
C) Eponychium
D) Lunule
E) Nail root

Question 55

The contraction of the piloerector muscles (pilomotor muscle or arrector pili)in humans causes __________.

A) hairs to stand on end,trapping an insulating layer of warm air next to the skin
B) generation of heat to raise the body temperature
C) hairs to stand on end to make the individual appear bigger
D) hairs to stand on end with no apparent function
E) increased ability to feel pain

Question 56

__________ is/are formed partly from the secretions of glands in the external ear canal.

A) Sebum
B) Cerumen
C) Sweat
D) Scents
E) Mucus

Question 57

Each hair grows in an oblique epithelial tube called a(an)__________.

A) hair follicle
B) vellum
C) pilus
D) bulb
E) shaft

Question 58

What type of hair is present prenatally and usually replaced by birth?

A) Lunule
B) Peach fuzz
C) Terminal hair
D) Vellus
E) Lanugo

Question 59

Mitosis in the __________ accounts for growth of the nail.

A) nail plate
B) nail fold
C) eponychium
D) hyponychium
E) nail matrix

Question 60

The base where a hair follicle originates in the skin is known as the __________.

A) hair bulb
B) hair root
C) shaft
D) medulla
E) cuticle

Question 61

Basal cell carcinoma initially affects cells of the stratum __________.

A) spinosum
B) germinativum
C) corneum
D) basale
E) lucidum

Question 62

__________ burns involve the epidermis,all of the dermis,and often some deeper tissue.

A) First-degree
B) Second-degree
C) Third-degree
D) Partial-thickness
E) Malignant

Question 63

In whom are mammary glands found?

A) In lactating females
B) In lactating and non-lactating females
C) In non-lactating females
D) In non-lactating females and males

Question 64

The skin is a barrier to all of the following except __________.

A) metals such as mercury
B) infectious organisms
C) water
D) UV rays

Question 65

The "ABCD rule" for recognizing early signs of malignant melanoma refers to which of the following characteristics of the lesion?

A) Asymmetry,border irregularity,color,and diameter
B) Asymmetry,brightness,color,and diameter
C) Aspect,brightness,color,and distance
D) Aspect,border irregularity,color,and distance
E) Area,border irregularity,color,and density

Question 66

The least common,but most deadly,type of skin cancer is __________.

A) basal cell carcinoma
B) squamous cell carcinoma
C) melanoma
D) skin lymphoma
E) skin sarcoma

Question 67

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

A) fluid loss
B) eschar
C) heat loss
D) pain
E) infection