Deck 5: Integumentary System

Question 1

Which of the following is NOT a component of the integumentary system?

A) Hair and nails
B) Glands
C) Skin
D) Fat

Answer 1

Fat

Question 2

Which of the following is NOT a function of the integumentary system?

A) Excretion
B) Temperature regulation
C) Vitamin C production
D) Protection
E) Sensation

Answer 2

Vitamin C production

Question 3

The skin is made up of the

A) Dermis and hypodermis
B) Epidermis and dermis
C) Epidermis and subcutaneous layer
D) Hypodermis and subcutaneous layer

Answer 3

Epidermis and dermis

Question 4

What connects the skin to underlying muscle or bone?

A) Dermis
B) Epidermis
C) Subcutaneous tissue
D) Integument

Question 5

Which of the following is NOT true of the epidermis?

A) It resists abrasion and reduces water loss
B) It is keratinized stratified squamous epithelium
C) It has many blood vessels and nerves
D) It has five strata of cells

Question 6

What material gives the epidermis the ability to resist abrasion and reduce water loss?

A) Keratin
B) Melanin
C) Carotene
D) Dermal papillae

Question 7

What structures of the epidermis are responsible for detecting light touch and superficial pressure?

A) Langerhans cells
B) Merkel cells
C) Keratinocytes
D) Cornified cells

Question 8

Which is the correct sequence of the strata of the epidermis from deep to superficial?
1. stratum lucidum
2. stratum basale
3. stratum corneum
4. stratum granulosum
5. stratum spinosum

A) 3,1,4,5,2
B) 1,2,3,4,5
C) 2,5,4,1,3
D) 4,2,3,1,5

Question 9

Having 8 - 10 layers of cells filled with keratin fibers and lamellar bodies is characteristic of the

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

Question 10

Having 2 - 5 layers of diamond-shaped cells containing protein granules of keratohyalin that die in the upper layer is characteristic of the

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

Question 11

Having several layers of dead cells with indistinct boundaries and found only in thick skin is characteristic of the

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

Question 12

Having 25 or more layers of dead squamous cells with a hard protein envelop, keratin and surrounded by lipids is characteristic of the

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

Question 13

The primary factor that determines skin color is

A) Sun exposure
B) Thickness of the stratum corneum
C) Blood circulation in the skin
D) Genetics that determines the amount of melanin produced

Question 14

What is the function of melanin besides providing skin pigmentation?

A) Water-proofing
B) Antibacterial
C) Protection from ultraviolet rays
D) Antifungal

Question 15

Melanin is produced by cells called

A) Melanocytes
B) Keratinocytes
C) Adipocyte
D) Langerhans cells

Question 16

How do keratinocytes obtain melanin?

A) Produce it through protein synthesis
B) Phagocytize tips of melanocytes to obtain melanosomes
C) By diffusion from melanocytes
D) By active transport from melanocytes

Question 17

Which of the following does NOT affect melanin production?

A) Blood flow through the skin
B) Exposure to ultraviolet light
C) Genetics
D) Hormones

Question 18

Which of the following can cause a temporary change in skin coloration?

A) Blood flow through the skin
B) Oxygenation of the blood
C) Eating too many carrots
D) All of the choices are correct

Question 19

The congenital absence of melanin is called

A) Erythema
B) Cyanosis
C) Mask of pregnancy
D) Albinism

Question 20

The top layer of the dermis is the

A) Papillary layer
B) Basal layer
C) Reticular layer
D) Dermal layer

Question 21

The main purpose of the dermal papillae is to

A) Give fingerprints
B) Improve grip and increase friction
C) Give skin coloration
D) Provide insulation

Question 22

The epidermis is made of _______ tissue, while the dermis is made of _____ tissue.

A) Connective; connective
B) Connective; epithelial
C) Epithelial; connective
D) Epithelial; epithelial

Question 23

Which of the following is NOT a function of the subcutaneous tissue?

A) Source of energy
B) Vitamin D production
C) Insulation
D) Padding

Question 24

The hypodermis is mostly

A) Protein
B) Collagen
C) Glycogen
D) Adipose tissue

Question 25

Fetal hair is called

A) Lunula
B) Vellus hair
C) Lanugo
D) Terminal hair

Question 26

Short, fine, generally unpigmented body hair is called

A) Lunula
B) Vellus hair
C) Lanugo
D) Terminal hair

Question 27

The dermal projection into the hair bulb that provides nutrition to the matrix is called the

A) Medulla
B) Cortex
C) Cuticle
D) Papilla

Question 28

What is the name of the skin muscle that causes hair to stand on end?

A) Hair follicle muscle
B) Arrector pili muscle
C) Dermal muscle
D) Cutaneous appendage muscle

Question 29

Which of the following is NOT true concerning merocrine sweat glands?

A) They are simple, coiled tubular glands
B) They are found all over the body, especially in the palms and soles
C) They open into hair follicles
D) They produce a salty, watery sweat

Question 30

Which of the following is NOT true concerning apocrine sweat glands?

A) They produce a thick organic secretion
B) They open into hair follicles in the axillae and genitalia
C) They are simple, coiled tubular glands
D) They are active from birth

Question 31

Where would a ceruminous gland be found?

A) Axillae
B) Ear canal
C) Forehead
D) Palms

Question 32

The visible part of a nail is the

A) Nail root
B) Eponychium
C) Nail matrix
D) Nail body

Question 33

The nail is produced by the

A) Nail root
B) Eponychium
C) Nail matrix
D) Nail body

Question 34

A portion of the nail matrix that is seen through the nail body is the

A) Cuticle
B) Lunula
C) Nail fold
D) Eponychium

Question 35

Which of the following is NOT a protective function of the integumentary system?

A) Intact skin reduces water loss
B) Skin protects underlying tissues from abrasion
C) Helps control body temperature
D) Intact skin prevents entry of microorganisms

Question 36

Which of the following is NOT how the hair provides protection?

A) Protects from ultraviolet light
B) Hair on head is a heat insulator
C) Eyebrows keep sweat out of eyes
D) Hair in nose prevents dust from entering the respiratory tract

Question 37

How does the skin aid in communication, integration and control of the body?

A) Produces vitamin D
B) Has receptors for touch, pressure, temperature and pain
C) Excretion of wastes
D) None of the choices is correct

Question 38

What occurs in the skin when body temperature increases that helps in temperature homeostasis?

A) Dermal arterioles dilate and sweat increases
B) Dermal arterioles constrict and sweat decreases
C) Epidermal arterioles dilate and sweat increases
D) Epidermal arterioles constrict and sweat increases

Question 39

What is the correct order of organs in the production of vitamin D?

A) Liver, kidneys, skin
B) Kidneys, skin, liver
C) Skin, liver, kidneys
D) Skin, kidneys, liver

Question 40

What is needed for the production of vitamin D?

A) A cholesterol molecule and sunlight
B) Sunlight and calcium
C) A cholesterol molecule and fish oil
D) Milk and fish oil

Question 41

What is the purpose of vitamin D in the body?

A) Prevents colds
B) Helps heal injuries
C) Stimulates calcium uptake from the intestines
D) Stimulates production of "good" cholesterol

Question 42

What may cyanosis of the skin indicate?

A) Liver damage
B) Bacterial infection
C) Impaired circulation or respiration
D) Iron-deficiency

Question 43

Which of the following is NOT a characteristic of a first-degree burn?

A) Involves only the epidermis
B) Are red and painful
C) May cause scarring
D) May have some edema

Question 44

Which of the following is NOT true of second-degree burns?

A) May cause scarring
B) Blistering occurs
C) Involves only the epidermis
D) Considered a partial-thickness burn

Question 45

Which of the following is NOT true of third-degree burns?

A) Scarring occurs and skin grafts are often needed
B) Involves the epidermis, dermis and deeper tissue layers
C) Is very painful
D) Appears white, tan, black or deep cherry red in color

Question 46

A burn that covers the entire left arm, the left anterior trunk and the anterior of the left leg would cover
_____ of the body surface area of an adult.

A) 36%
B) 24%
C) 27%
D) 31%

Question 47

Most skin cancers result from

A) Chemicals
B) Genetics
C) X-rays
D) Ultraviolet radiation

Question 48

Many times an actinic keratosis can progress to

A) Melanoma
B) Basal cell carcinoma
C) Squamous cell carcinoma
D) Kaposi's sarcoma

Question 49

Squamous cell carcinoma arises from cells of the

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

Question 50

The ABCDE rule aids in early detection of

A) Melanoma
B) Basal cell carcinoma
C) Squamous cell carcinoma
D) Kaposi's sarcoma

Question 51

Which part of the ABCDE rule is NOT correctly matched with its meaning?

A) A - asymmetry
B) B - border irregularity
C) C - color nonuniform
D) D - dead cells
E) E - evolving or changing

Question 52

Which type of ultraviolet radiation is the most potent cause of sunburn, basal cell and squamous cell carcinomas and melanoma?

A) UV-D
B) UV-C
C) UV-B
D) UV-A

Question 53

Which of the following is/are an effect of aging on the integumentary system?

A) Epidermis thins and collagen thins in the dermis
B) Skin sags and wrinkles due to fat loss
C) Skin becomes drier due to decreased sebum
D) Hair turns white or gray due to decreased melanin
E) All of the choices are effects of aging

Question 54

A large amount of adipose tissue is found in the dermis.

Question 55

The loss of epidermal cells from the surface is called desquamation.

Question 56

A thickened area of the stratum cornea due to friction or pressure is a corn.

Question 57

Most of the skin on the body is thin skin.

Question 58

People with darker skin have more melanocytes than those with lighter skin.

Question 59

A decrease in the oxygenation of the blood will cause the skin to take on a bluish tinge called cyanosis.

Question 60

An incision made across the lines of cleavage can gap and not heal as quickly.

Question 61

Hair is made of many layers of dead keratinized cells.

Question 62

The hair bulb is in the epidermis.

Question 63

Hair in different areas of the body grow and rest at different rates.

Question 64

Hair color is determined by the same method as in the skin.

Question 65

Merocrine sweat glands produce sebum.

Question 66

Nail color is determined by the same method as skin and hair.

Question 67

If exposed to enough ultraviolet light, humans will produce all the vitamin D that they need.

Question 68

Hair analysis can be very useful in determining general health or nutritional status.

Question 69

An SPF of at least 15 is recommended for protection against UV-A and UV-B.