chapter 6

Question 1

A ________ is an elevated patch of melanized skin.

Answer 1

mole

Question 2

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

Answer 2

Anagen, catagen, and telogen

Question 3

A pilus is a ________.

Answer 3

hair

Question 4

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

Answer 4

dermal papilla

Question 5

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

Answer 5

keratinocytes

Question 6

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

Answer 6

hair follicle

Question 7

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

Answer 7

the quantity of melanin produced

Question 8

Excessive hairiness is called ________.

Answer 8

hirsutism

Question 9

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

Answer 9

dermal papillae

Question 10

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

Answer 10

hypodermis

Question 11

Increased bilirubin levels cause a skin discoloration called ________.

Answer 11

jaundice

Question 12

Leather is made of the ________ layer of the dermis.

Answer 12

reticular

Question 13

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

Answer 13

apocrine

Question 14

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.

Answer 14

fourth

Question 15

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

Answer 15

apocrine

Question 16

Mitosis in the ________ accounts for growth of the nail.

Answer 16

nail matrix

Question 17

Most of the skin is ________ mm thick.

Answer 17

1 to 2

Question 18

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

Answer 18

merocrine sweat

Question 19

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

Answer 19

fingertips

Question 20

The “ABCD rule” for recognizing early signs of malignant melanoma refers to the following characteristics of the lesion:

Answer 20

asymmetry, border irregularity, color, and diameter

Question 21

The ________ glands are a source of sex pheromones.

Answer 21

apocrine

Question 22

The ________ is absent from most epidermis.

Answer 22

stratum lucidum

Question 23

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

Answer 23

hair bulb

Question 24

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

Answer 24

hairs to stand on end with no apparent function

Question 25

The fastest rate of mitosis happens in the ________.

Answer 25

stratum basale

Question 26

The hypodermis is characterized by an abundance of which tissue?

Answer 26

adipose tissue

Question 27

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

Answer 27

melanoma

Question 28

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

Answer 28

eponychium

Question 29

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

Answer 29

sebaceous

Question 30

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

Answer 30

Hemoglobin

Question 31

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

Answer 31

hematoma

Question 32

Variations in hair color arise from differing amounts of ________.

Answer 32

eumelanin and pheomelanin

Question 33

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

Answer 33

lunule

Question 34

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

Answer 34

lanugo

Question 35

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

Answer 35

Stratified squamous epithelium

Question 36

Which cutaneous glands are concerned with cooling the body?

Answer 36

Merocrine glands

Question 37

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

Answer 37

Stratum corneum

Question 38

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

Answer 38

Tactile (Merkel) cells

Question 39

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

Answer 39

Collagen and fibroblasts

Question 40

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

Answer 40

Melanocyte

Question 41

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

Answer 41

Dendritic (Langerhans) cells

Question 42

Which of the following is not found in the epidermis?

Answer 42

fibroblasts

Question 43

Which of the following is not part of the skin?

Answer 43

hypodermis

Question 44

Which of the skin layers below is the most superficial?

Answer 44

epidermis

Question 45

Which skin color is most likely to result from anemia?

Answer 45

pallor

Question 46

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

Answer 46

Stratum spinosum and stratum basale

Question 47

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

Answer 47

Cerumen