Question 1

Light-skinned people have less melanin in the superficial layers of their epidermis because

Accepted Answer

A)  they are exposed to less UV radiation. 
B)  they have fewer melanocytes. 
C)  keratinocytes in their deeper layers rapidly digest melanin. 
D)  their melanocytes produce a pinkish color melanin instead of brown. 
A)  they are exposed to less UV radiation. 
B)  they have fewer melanocytes. 
C)  keratinocytes in their deeper layers rapidly digest melanin. 
D)  their melanocytes produce a pinkish color melanin instead of brown.

Question 2

An appendage or layer of the skin that does not develop from ectoderm is the

Accepted Answer

A)  stratum spinosum. 
B)  hair follicle. 
C)  stratum corneum. 
D)  dermis. 
A)  stratum spinosum. 
B)  hair follicle. 
C)  stratum corneum. 
D)  dermis.

Question 3

Is the human integumentary system best adapted for hot or cold climates?

Accepted Answer

A)  cold, because we have many skin features that keep us from overheating 
B)  cold, because we have a thick hypodermis 
C)  warm, because sweating cools us in hot climates but we would die in cold climates without clothing 
D)  warm, because sebaceous glands aid us in hot climates but evaporative cooling would kill us in cold climates 
A)  cold, because we have many skin features that keep us from overheating 
B)  cold, because we have a thick hypodermis 
C)  warm, because sweating cools us in hot climates but we would die in cold climates without clothing 
D)  warm, because sebaceous glands aid us in hot climates but evaporative cooling would kill us in cold climates

Question 4

The black part of a blackhead is

Accepted Answer

A)  oxidized sebum. 
B)  dirt. 
C)  a growing hair stub. 
D)  excreted carbon. 
A)  oxidized sebum. 
B)  dirt. 
C)  a growing hair stub. 
D)  excreted carbon.

Question 5

The lunule, which represents the thickest part of the nail matrix is found at the

Accepted Answer

A)  body of the nail. 
B)  eponychium. 
C)  proximal part of the nail bed. 
D)  dermis around the nail. 
A)  body of the nail. 
B)  eponychium. 
C)  proximal part of the nail bed. 
D)  dermis around the nail.

Question 6

Which layer of the integument contains the stratum basale?

Accepted Answer

A)  dermis 
B)  hypodermis 
C)  epidermis 
A)  dermis 
B)  hypodermis 
C)  epidermis

Question 7

Sebaceous glands secrete oil onto the surface of the epidermis via the hair follicle.

Accepted Answer

A) True 
 B)False

Question 8

Skin cancers are the most common types of cancer in the United States, and the most important risk factor is overexposure to ultraviolet radiation.

Accepted Answer

A) True 
 B)False

Question 9

Use the diagram above to answer the following questions.
-Which letter indicates projections from the dermis that reduce blister formation?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 10

The proximal nail fold is also called the nail's

Accepted Answer

A)  matrix. 
B)  bed. 
C)  lunule. 
D)  eponychium. 
A)  matrix. 
B)  bed. 
C)  lunule. 
D)  eponychium.

Question 11

Use the diagram above to answer the following questions.
-Which letter indicates the portion of a hair that projects above the skin surface?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 12

Any condition involving absence or loss of hair is called

Accepted Answer

A)  psoriasis. 
B)  alopecia. 
C)  impetigo. 
D)  vitiligo. 
A)  psoriasis. 
B)  alopecia. 
C)  impetigo. 
D)  vitiligo.

Question 13

Holocrine secretion

Accepted Answer

A)  differentiates the products of ceruminous and mammary glands from other sweat glands. 
B)  involves the bursting of the glandular epithelial cell. 
C)  produces a lipid-rich product that can be metabolized by bacteria. 
D)  results from the exocytosis of protein-rich vesicles. 
A)  differentiates the products of ceruminous and mammary glands from other sweat glands. 
B)  involves the bursting of the glandular epithelial cell. 
C)  produces a lipid-rich product that can be metabolized by bacteria. 
D)  results from the exocytosis of protein-rich vesicles.

Question 14

Describe the vascularization of the skin.

Accepted Answer

The dermis contains two vascular plexi.

Question 15

The thickness of skin is determined by the presence of the stratum lucidum and the thickness of the

Accepted Answer

A)  papillary layer of the dermis. 
B)  reticular layer of the dermis. 
C)  stratum basale. 
D)  stratum corneum. 
A)  papillary layer of the dermis. 
B)  reticular layer of the dermis. 
C)  stratum basale. 
D)  stratum corneum.

Question 16

Use the diagram above to answer the following questions.
-Which letter indicates cells that produce melanin in the hair root?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Question 17

The contraction of skeletal muscle cells of the arrector pili muscles, attached to hair follicles, causes "goose bumps."

Accepted Answer

A) True 
 B)False

Question 18

In addition to nourishing the epidermal cells, the dermal blood vessels function in

Accepted Answer

A)  thermoregulation. 
B)  protection. 
C)  sensory reception. 
D)  Vitamin D production. 
A)  thermoregulation. 
B)  protection. 
C)  sensory reception. 
D)  Vitamin D production.

Question 19

The type of skin cancer that arises from keratinocytes of the stratum spinosum is

Accepted Answer

A)  basal cell carcinoma. 
B)  malignant melanoma. 
C)  squamous cell carcinoma. 
D)  psoriasis. 
A)  basal cell carcinoma. 
B)  malignant melanoma. 
C)  squamous cell carcinoma. 
D)  psoriasis.

Question 20

Use the diagram above to answer the following questions.
-Which letter indicates the innermost portion of hair that is comprised of large epithelial cells and air spaces?

Accepted Answer

A)  A 
B)  B 
C)  C 
D)  D 
E)  E 
A)  A 
B)  B 
C)  C 
D)  D 
E)  E

Exam 5: The Integumentary System

Light-skinned people have less melanin in the superficial layers of their epidermis because

An appendage or layer of the skin that does not develop from ectoderm is the

Is the human integumentary system best adapted for hot or cold climates?

The black part of a blackhead is

The lunule, which represents the thickest part of the nail matrix is found at the

Which layer of the integument contains the stratum basale?

Sebaceous glands secrete oil onto the surface of the epidermis via the hair follicle.

Skin cancers are the most common types of cancer in the United States, and the most important risk factor is overexposure to ultraviolet radiation.

Use the diagram above to answer the following questions. -Which letter indicates projections from the dermis that reduce blister formation?

The proximal nail fold is also called the nail's

Use the diagram above to answer the following questions. -Which letter indicates the portion of a hair that projects above the skin surface?

Any condition involving absence or loss of hair is called

Holocrine secretion

Describe the vascularization of the skin.

The thickness of skin is determined by the presence of the stratum lucidum and the thickness of the

Use the diagram above to answer the following questions. -Which letter indicates cells that produce melanin in the hair root?

The contraction of skeletal muscle cells of the arrector pili muscles, attached to hair follicles, causes "goose bumps."

In addition to nourishing the epidermal cells, the dermal blood vessels function in

The type of skin cancer that arises from keratinocytes of the stratum spinosum is

Use the diagram above to answer the following questions. -Which letter indicates the innermost portion of hair that is comprised of large epithelial cells and air spaces?

The Human Body: an Orientation

Cells: the Living Units

Basic Embryology

Tissues

Bones and Skeletal Tissues

Bones, Part 1: the Axial Skeleton

Bones, Part 2: the Appendicular Skeleton

Joints

Skeletal Muscle Tissue

Muscles of the Body

Fundamentals of the Nervous System and Nervous Tissue

The Central Nervous System

The Peripheral Nervous System

The Autonomic Nervous System and Visceral Sensory Neurons

The Special Senses

The Endocrine System

Blood

The Heart

Blood Vessels

The Lymphatic and Immune Systems

The Respiratory System

The Digestive System

The Urinary System

The Reproductive System

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