Question 1

This structure acts to prevent water loss as well as inhibiting bacterial growth on the surface of the skin.

Accepted Answer

A)  melanin 
B)  nail 
C)  sweat glands 
D)  hair 
E)  sebaceous glands 
A)  melanin 
B)  nail 
C)  sweat glands 
D)  hair 
E)  sebaceous glands

Question 2

This layer of the skin is composed of loose areolar connective tissue.

Accepted Answer

A)  epidermis 
B)  papillary layer of dermis 
C)  reticular layer of dermis 
D)  stratum lucidum 
E)  cutaneous 
A)  epidermis 
B)  papillary layer of dermis 
C)  reticular layer of dermis 
D)  stratum lucidum 
E)  cutaneous

Question 3

In the diagram, where is the cortex?

Accepted Answer

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

Question 4

Which layer of the epidermis is the most mitotically active? In other words, which layer has rapidly dividing cells?

Accepted Answer

A)  stratum granulosum 
B)  stratum basale 
C)  stratum corneum 
D)  stratum lucidum, although only in thick skin 
E)  stratum spinosum 
A)  stratum granulosum 
B)  stratum basale 
C)  stratum corneum 
D)  stratum lucidum, although only in thick skin 
E)  stratum spinosum

Question 5

Describe the structural characteristics of the epidermis that relate to its protection function.

Accepted Answer

Multiple layers of cells in stratified s

Question 6

Which of the following is FALSE regarding vitamin D?

Accepted Answer

A)  Approximately 15 minutes of exposure to ultraviolet light every 3 days is all the exposure the body requires for vitamin D synthesis. 
B)  The liver and kidneys have enzymes to produce calcitriol, the most active form of vitamin D. 
C)  Ultraviolet light in the skin produces an activated molecule that is a precursor to the most active form of vitamin D. 
D)  Melanocytes produce the pigment that absorbs ultraviolet light just before transferring the energy to the vitamin D precursor. 
E)  Calcitriol is a hormone that increases the absorption of calcium in the digestive system. 
A)  Approximately 15 minutes of exposure to ultraviolet light every 3 days is all the exposure the body requires for vitamin D synthesis. 
B)  The liver and kidneys have enzymes to produce calcitriol, the most active form of vitamin D. 
C)  Ultraviolet light in the skin produces an activated molecule that is a precursor to the most active form of vitamin D. 
D)  Melanocytes produce the pigment that absorbs ultraviolet light just before transferring the energy to the vitamin D precursor. 
E)  Calcitriol is a hormone that increases the absorption of calcium in the digestive system.

Question 7

List and briefly discuss the functions of skin.

Accepted Answer

1) regulation of body temperature via sw

Question 8

In the diagram of the inflammatory phase of deep wound healing, where are the collagen fibers?

Accepted Answer

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

Question 9

This layer of epidermis is composed of a single row of cuboidal or columnar keratinocytes.

Accepted Answer

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

Question 10

Keratin ___.

Accepted Answer

A)  is a protein 
B)  participates in immune responses to protect the body from viruses 
C)  is produced in melanocytes only 
D)  is involved in viral immune responses and is produced in melanocytes only 
E)  all of these choices 
A)  is a protein 
B)  participates in immune responses to protect the body from viruses 
C)  is produced in melanocytes only 
D)  is involved in viral immune responses and is produced in melanocytes only 
E)  all of these choices

Question 11

In the diagram, where is the dermal root sheath?

Accepted Answer

A)  C 
B)  D 
C)  E 
D)  F 
E)  G 
A)  C 
B)  D 
C)  E 
D)  F 
E)  G

Question 12

Briefly describe the steps in epidermal wound healing.

Accepted Answer

In response to an epidermal injury, basa

Question 13

How does scar tissue differ from normal skin?

Accepted Answer

A)  There are fewer blood vessels in scar tissue. 
B)  Scars are usually lighter in color. 
C)  Scar tissue is less elastic, and it has a denser arrangement of collagen fibers. 
D)  Scar tissue may have fewer hairs, glands, and sensory structures than normal skin. 
E)  All of these choices. 
A)  There are fewer blood vessels in scar tissue. 
B)  Scars are usually lighter in color. 
C)  Scar tissue is less elastic, and it has a denser arrangement of collagen fibers. 
D)  Scar tissue may have fewer hairs, glands, and sensory structures than normal skin. 
E)  All of these choices.

Question 14

What is happening at B in the diagram of the inflammatory phase of deep wound healing?

Accepted Answer

A)  a blood clot is forming 
B)  collagen fibers are forming 
C)  damaged blood vessels are regrowing 
D)  epithelial cells are migrating across the wound 
E)  scar tissue is forming 
A)  a blood clot is forming 
B)  collagen fibers are forming 
C)  damaged blood vessels are regrowing 
D)  epithelial cells are migrating across the wound 
E)  scar tissue is forming

Question 15

In the diagram of the inflammatory phase of deep wound healing, where is the blood clot?

Accepted Answer

A)  A 
B)  C 
C)  D 
D)  G 
E)  H 
A)  A 
B)  C 
C)  D 
D)  G 
E)  H

Question 16

What is the name of the pigment that absorbs ultraviolet light?

Accepted Answer

A)  keratin 
B)  melanin 
C)  melatonin 
D)  carotene 
E)  hemoglobin 
A)  keratin 
B)  melanin 
C)  melatonin 
D)  carotene 
E)  hemoglobin

Question 17

Which layer is composed mainly of connective tissue with collagen and elastic fibers?

Accepted Answer

A)  hypodermis 
B)  basement membrane 
C)  epidermis 
D)  dermis 
E)  all of these choices 
A)  hypodermis 
B)  basement membrane 
C)  epidermis 
D)  dermis 
E)  all of these choices

Question 18

In the figure, where is the nail body?

Accepted Answer

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

Question 19

In the figure, where is the nail matrix?

Accepted Answer

A)  B 
B)  C 
C)  E 
D)  F 
E)  G 
A)  B 
B)  C 
C)  E 
D)  F 
E)  G

Question 20

The muscle associated with a hair follicle that causes the hair to stand on end when contracted is called the ___.

Accepted Answer

A)  spinous folliculi 
B)  arrector pili 
C)  arrector ceruminae 
D)  pili folliculi 
E)  pili folliculus spinous 
A)  spinous folliculi 
B)  arrector pili 
C)  arrector ceruminae 
D)  pili folliculi 
E)  pili folliculus spinous

Exam 5: The Integumentary System

This structure acts to prevent water loss as well as inhibiting bacterial growth on the surface of the skin.

This layer of the skin is composed of loose areolar connective tissue.

In the diagram, where is the cortex?

Which layer of the epidermis is the most mitotically active? In other words, which layer has rapidly dividing cells?

Describe the structural characteristics of the epidermis that relate to its protection function.

Which of the following is FALSE regarding vitamin D?

List and briefly discuss the functions of skin.

In the diagram of the inflammatory phase of deep wound healing, where are the collagen fibers?

This layer of epidermis is composed of a single row of cuboidal or columnar keratinocytes.

Keratin ___.

In the diagram, where is the dermal root sheath?

Briefly describe the steps in epidermal wound healing.

How does scar tissue differ from normal skin?

What is happening at B in the diagram of the inflammatory phase of deep wound healing?

In the diagram of the inflammatory phase of deep wound healing, where is the blood clot?

What is the name of the pigment that absorbs ultraviolet light?

Which layer is composed mainly of connective tissue with collagen and elastic fibers?

In the figure, where is the nail body?

In the figure, where is the nail matrix?

The muscle associated with a hair follicle that causes the hair to stand on end when contracted is called the ___.

An Introduction to the Human Body

The Chemical Level of Organization

The Cellular Level of Organization

The Tissue Level of Organization

Introduction to the Skeletal System

The Axial Skeleton

The Appendicular Skeleton

Articulations

Muscle Tissue

The Muscular System

Introduction to the Nervous System

The Central Nervous System

The Peripheral Nervous System

Sensory, Motor, and Integrative Systems

The Special Senses

The Endocrine System

The Cardiovascular System: the Blood

The Cardiovascular System: the Heart

The Cardiovascular System: Blood Vessels

The Lymphatic System and Immunity

The Respiratory System

The Digestive System

The Urinary System

The Reproductive Systems and Development

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