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Anatomy and Physiology, 6/e
Rod Seeley, Idaho State University
Trent Stephens, Idaho State University
Philip Tate, Phoenix College

Integumentary System

Chapter Quiz



1

A major function of the skin is protection from
A)abrasion.
B)ultraviolet light.
C)entry of microorganisms.
D)dehydration.
E)all of these
2

The layer of skin that is composed of dense connective tissue and has projections called papillae is the
A)dermis.
B)hypodermis.
C)stratum corneum.
D)stratum basale.
E)stratum lucidum.
3

Striae occur as a result of
A)pimples.
B)overstretching the dermis.
C)losing too much epidermis.
D)too many fibers in the hypodermis.
E)loss of hair follicles.
4

This layer contains loose connective tissue and has about half of the body's stored fat.
A)dermis
B)hypodermis
C)stratum corneum
D)stratum basale
E)stratum lucidum
5

The specific layer that shapes the ridges for fingerprints and footprints is the
A)hypodermis.
B)papillary layer of the dermis.
C)reticular layer of the dermis.
D)underlying muscle layer.
E)superficial bony layer.
6

The epidermis is nourished by diffusion from capillaries in the
A)epidermis.
B)reticular layer of the dermis.
C)papillary layer of the dermis.
D)hypodermis.
E)subcutaneous tissue.
7

Cell division occurs in which layer of the epidermis?
A)stratum basale
B)stratum corneum
C)stratum granulosum
D)stratum lucidum
E)stratum reticularis
8

The stratum germinativum includes both the stratum basale and the
A)stratum corneum.
B)stratum granulosum.
C)stratum lucidum.
D)stratum reticularis.
E)stratum spinosum.
9

In which layer of epidermis do the nucleus and other organelles disintegrate, and the cells die?
A)stratum basale
B)stratum corneum
C)stratum granulosum
D)stratum lucidum
E)stratum spinosum
10

The __________ consists of many layers of dead squamous cells surrounded by lipids.
A)dermis
B)hypodermis
C)stratum corneum
D)stratum basale
E)stratum spinosum
11

In which of these layers are melanocytes found?
A)dermis
B)hypodermis
C)stratum corneum
D)stratum basale
E)stratum lucidum
12

Thick skin
A)usually lacks the stratum lucidum.
B)is typically found on the back.
C)does not produce hair.
D)(unlike thin skin) develops calluses and corns.
E)all of these
13

Most of the cells of the epidermis are
A)fibroblasts.
B)keratinocytes.
C)Langerhans cells.
D)macrophages.
E)melanocytes.
14

Which of these statements is true regarding keratinization?
A)The deepest cells are located in the stratum corneum.
B)Epithelial cells eventually die and produce an outer layer of cells.
C)The stratum corneum has cuboidal or columnar cells that undergo mitotic division.
D)The stratum basale can thicken to produce a callus.
E)The newest cells are found in the outer layer of cells.
15

Cyanosis is a condition caused by
A)consuming large amounts of carotene.
B)increased blood flow to the skin.
C)albinism.
D)exposure to ultraviolet light.
E)a decrease in blood oxygen.
16

Concerning skin color, which of these statements is correctly matched?
A)Skin appears yellow = not enough oxygen in blood.
B)Pale skin = shock.
C)Skin tans = increased carotene in stratum corneum.
D)Dark skin = less melanin than light skin.
E)Pregnancy = decrease in the production of melanin.
17

Melanin
A)production occurs in melanocytes and keratinocytes.
B)is packaged into vesicles called melanosomes.
C)is present in large quantities on the soles of the feet.
D)is responsible for skin color, but not hair color.
E)all of these
18

All of these conditions increase the amount of melanin in the skin EXCEPT:
A)exposure to ultraviolet light.
B)pregnancy.
C)Addison's disease.
D)vitiligo.
E)freckles.
19

Which type of burn is described by all of the following characteristics? 1. epidermis and dermis destroyed 2. initially painless 3. much scar tissue formed
A)first-degree burn
B)second-degree burn
C)third-degree burn
20

According to "the rule of nines," a man burned extensively on his head and both upper limbs has burns on __________ percent of his body.
A)9
B)18
C)27
D)36
E)45
21

Which of these is the type of hair found on the fetus, but is not present after birth?
A)terminal hair
B)lanugo
C)vellus hair
D)both a and b
22

"Peach fuzz" found on the face of a 1-year old baby is
A)lanugo.
B)terminal hair.
C)vellus hair.
23

Terminal hair
A)is found in greater quantity in adult females than in adult males.
B)decreases at puberty.
C)is found on eyebrows and eyelids.
D)is fine, unpigmented hair.
E)is found only on the toes.
24

The outermost layer of the hair shaft is the
A)cortex.
B)cuticle.
C)medulla.
25

The hair follicle
A)has an epithelial root sheath and a dermal root sheath.
B)can provide epithelial cells for skin repair.
C)contains only the stratum germinativum at the hair bulb.
D)has an arrector pili muscle attached.
E)all of these
26

Hair is formed from epithelial cells in the
A)matrix.
B)dermal root sheath.
C)hypodermis.
D)cuticle.
E)hair shaft.
27

Scalp hairs can grow longer than eyelash hairs because
A)the head has a better blood supply than the eyelid.
B)the hair follicles in the scalp are much deeper than follicles in the eyelid.
C)the scalp hairs are more exposed to the sun, which stimulates growth.
D)the growth stage for scalp hairs is longer than for eyelash hairs.
E)the eyelash hair shaft consists of columns of dead keratinized epithelial cells.
28

After the resting stage of hair growth, each hair normally
A)grows more rapidly.
B)falls out.
C)loses its pigmentation.
D)produces more melanocytes.
E)increases the depth of the hair follicle.
29

Arrector pili muscles
A)consist of skeletal muscle fibers.
B)are attached directly to the hair shaft.
C)contract in response to frightening situations.
D)cause sweat glands to contract.
E)assist in the production of sebum.
30

"Pattern baldness"
A)occurs only in men.
B)is not genetic.
C)occurs when vellus hairs are replaced by terminal hairs.
D)involves the hormone testosterone.
E)all of these
31

Which glands of the skin possess all of the following characteristics? 1. secrete oily, white substance rich in lipids 2. open into a hair follicle 3. during secretion, lysis and death of secretory cells occurs
A)apocrine sweat glands
B)merocrine sweat glands
C)sebaceous glands
32

Which of these parts of the body have the most merocrine sweat glands?
A)margins of the lips
B)soles of the feet
C)forearm
D)leg
E)back of neck
33

Apocrine sweat glands
A)are found everywhere in the body except the palms of the hands.
B)produce secretions that are metabolized by bacteria to produce odor.
C)are functional even in babies.
D)are located in the external auditory meatus.
E)produce cerumen.
34

Nails
A)grow from the nail matrix.
B)have a resting stage, similar to hair.
C)have a visible part, which is the nail bed.
D)have a hyponychium, which is the whitish, crescent-shaped area at the base of the nail.
E)contain proteoglycans and chondrocytes.
35

The nail is __________ that contains hard keratin.
A)stratum basale
B)stratum corneum
C)stratum granulosum
D)stratum lucidum
E)stratum spinosum
36

Which of these events occur as a result of a decrease in body temperature?
A)blood vessels in the epidermis dilate, at first
B)blood vessels in the dermis constrict if skin temperature falls below 15 degrees C
C)contraction of arrector pili muscles
D)sweat is produced
E)all of these
37

Protective functions of the integumentary system include all of these EXCEPT:
A)callus formation prevents damage by friction.
B)nails protect the ends of digits.
C)hairs in the nose and ears prevent entry of foreign materials.
D)hair protects the head from abrasion and ultraviolet light.
E)skin glands produce alkaline secretions that kill bacteria.
38

As a result of aging, the skin
A)increases the amount of elastic fibers in the dermis.
B)becomes thicker.
C)has decreased blood flow.
D)has increased activity of the sebaceous and sweat glands.
E)generally increases the amount of melanin produced.
39

Which of these is NOT considered to be a cause of acne?
A)hormones, especially testosterone
B)a diet rich in fatty foods and chocolate
C)abnormal keratinization of hair follicles
D)an increase in sebum production
E)the bacterium Propionibacterium acnes
40

Which of these qualities must a medication possess if it is absorbed from a skin patch?
A)lipid-soluble
B)water-soluble
C)must contain keratin
D)must be slightly acidic
E)must contain melanin