Question 1

Corns are

Accepted Answer

A) areas of white skin pigmentation. 
B) scaly scalp areas. 
C) keratinized conical masses on toes. 
D) growths emanating from the nostrils. 
A) areas of white skin pigmentation. 
B) scaly scalp areas. 
C) keratinized conical masses on toes. 
D) growths emanating from the nostrils.

Question 2

Hypothermia is

Accepted Answer

A) associated with exercising vigorously in the heat. 
B) accompanied by fever. 
C) a lowered body temperature. 
D) a form of hair loss. 
A) associated with exercising vigorously in the heat. 
B) accompanied by fever. 
C) a lowered body temperature. 
D) a form of hair loss.

Question 3

A person slams their fingers in a door. Their fingernails are damaged near the lunula, forming large white ovals at the site of the injury. As time progresses, what happens to the damaged (white)area?

Accepted Answer

A) The white ovals will slowly dissipate and disappear as the damage is replaced from underneath via the nail bed. 
B) The white ovals will split vertically and each half will gradually move toward the lateral (horizontal)edges of the nails. 
C) The white ovals will be pushed up and out of the nail as raised bumps, with that section of nail eventually peeling off. 
D) The white ovals will gradually move upward toward the free edge of the nail and then be worn away with the free nail edge. 
A) The white ovals will slowly dissipate and disappear as the damage is replaced from underneath via the nail bed. 
B) The white ovals will split vertically and each half will gradually move toward the lateral (horizontal)edges of the nails. 
C) The white ovals will be pushed up and out of the nail as raised bumps, with that section of nail eventually peeling off. 
D) The white ovals will gradually move upward toward the free edge of the nail and then be worn away with the free nail edge.

Question 4

The ________ of the subcutaneous layer acts as a heat insulator.

Accepted Answer

adipose ti

Question 5

The epidermis is about ________ mm thick and the dermis is about ________ mm thick.

Accepted Answer

A) 1.0 to 2.0; 0.07 to 0.12 
B) 0.07 to 0.12; 1.0 to 2.0 
C) 3.0 to 4.0; 5.0 to 6.0 
D) 0.01 to 0.10; 0.10 to 1.0 
A) 1.0 to 2.0; 0.07 to 0.12 
B) 0.07 to 0.12; 1.0 to 2.0 
C) 3.0 to 4.0; 5.0 to 6.0 
D) 0.01 to 0.10; 0.10 to 1.0

Question 6

Which of the following is a normal response to excessive loss of body heat in a cold environment?

Accepted Answer

A) Dermal blood vessels constrict. 
B) Sweat glands become active. 
C) Smooth muscles relax. 
D) Dermal blood vessels dilate. 
A) Dermal blood vessels constrict. 
B) Sweat glands become active. 
C) Smooth muscles relax. 
D) Dermal blood vessels dilate.

Question 7

Botox works by blocking nerve communications and typically is used to target the muscles of the face to reduce wrinkling. However, some patients with excessive sweating (hyperhidrosis)have Botox injected into problem areas to reduce the amount of sweating. Why would this work?

Accepted Answer

A) Nerves that directly communicate with sweat glands and stimulate them to produce sweat are blocked. 
B) The arrector pili muscle is blocked from receiving nerve signal and can't squeeze sweat from the glands. 
C) Specialized muscles controlling the sweat glands are blocked from communication. 
D) The Botox toxin directly paralyzes the sweat glands on contact. 
A) Nerves that directly communicate with sweat glands and stimulate them to produce sweat are blocked. 
B) The arrector pili muscle is blocked from receiving nerve signal and can't squeeze sweat from the glands. 
C) Specialized muscles controlling the sweat glands are blocked from communication. 
D) The Botox toxin directly paralyzes the sweat glands on contact.

Question 8

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis.

Accepted Answer

A) True 
 B)False

Question 9

Sweat cools the body by

Accepted Answer

A) convection. 
B) conduction. 
C) evaporation. 
D) radiation. 
A) convection. 
B) conduction. 
C) evaporation. 
D) radiation.

Question 10

The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the

Accepted Answer

A) stratum corneum. 
B) stratum granulosum. 
C) stratum spinosum. 
D) stratum basale. 
A) stratum corneum. 
B) stratum granulosum. 
C) stratum spinosum. 
D) stratum basale.

Question 11

The arrector pili muscles are attached to

Accepted Answer

A) nail beds. 
B) sebaceous glands. 
C) the hypodermis. 
D) hair follicles. 
A) nail beds. 
B) sebaceous glands. 
C) the hypodermis. 
D) hair follicles.

Question 12

The hardness of a nail comes from

Accepted Answer

A) carotene. 
B) collagen. 
C) calcium. 
D) keratin. 
A) carotene. 
B) collagen. 
C) calcium. 
D) keratin.

Question 13

Sebaceous glands secrete

Accepted Answer

A) fat globules that mix with cellular debris, forming sebum. 
B) hormones. 
C) sweat in the armpits. 
D) mucus. 
A) fat globules that mix with cellular debris, forming sebum. 
B) hormones. 
C) sweat in the armpits. 
D) mucus.

Question 14

We enjoy sunbathing because it stimulates keratinocytes to release

Accepted Answer

A) beta endorphin. 
B) collagen. 
C) carotene. 
D) keratin. 
A) beta endorphin. 
B) collagen. 
C) carotene. 
D) keratin.

Question 15

Eccrine sweat glands differ from sebaceous glands

Accepted Answer

A) in type of secretion. 
B) in their location. 
C) in whether or not they are associated with hair follicles. 
D) all of the answer choices are correct. 
A) in type of secretion. 
B) in their location. 
C) in whether or not they are associated with hair follicles. 
D) all of the answer choices are correct.

Question 16

You step out of the shower and vigorously rub your skin with a towel. If you were able to analyze the towel, you would find skin cells. They are most likely

Accepted Answer

A) subcutaneous layer cells. 
B) from the dermis. 
C) keratinized epidermal cells. 
D) fibroblasts. 
A) subcutaneous layer cells. 
B) from the dermis. 
C) keratinized epidermal cells. 
D) fibroblasts.

Question 17

Exposure to ultraviolet radiation greatly increases the risk of developing

Accepted Answer

A) heart disease. 
B) diabetes. 
C) skin cancer. 
D) glaucoma. 
A) heart disease. 
B) diabetes. 
C) skin cancer. 
D) glaucoma.

Question 18

Mira Dry is a cosmetic procedure where the underarm areas are microwaved. After this procedure, patients notice a drastic reduction in both the usual foul smell of body odor and wetness from regular sweating. Hair structures remain unaffected. According to these results, what structures must be damaged?

Accepted Answer

A) Eccrine sweat glands 
B) Eccrine sweat glands and sebaceous glands 
C) Eccrine and apocrine sweat glands 
D) Sebaceous glands 
A) Eccrine sweat glands 
B) Eccrine sweat glands and sebaceous glands 
C) Eccrine and apocrine sweat glands 
D) Sebaceous glands

Question 19

The flexible proteins that link the cell membranes of squamous epithelial cells in skin are

Accepted Answer

A) cadherins. 
B) collagens. 
C) cellular adhesion molecules (CAMs). 
D) keratins. 
A) cadherins. 
B) collagens. 
C) cellular adhesion molecules (CAMs). 
D) keratins.

Question 20

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light.

Accepted Answer

A) True 
 B)False

Exam 6: Integumentary System

Corns are

Hypothermia is

A person slams their fingers in a door. Their fingernails are damaged near the lunula, forming large white ovals at the site of the injury. As time progresses, what happens to the damaged (white)area?

The ________ of the subcutaneous layer acts as a heat insulator.

The epidermis is about ________ mm thick and the dermis is about ________ mm thick.

Which of the following is a normal response to excessive loss of body heat in a cold environment?

Botox works by blocking nerve communications and typically is used to target the muscles of the face to reduce wrinkling. However, some patients with excessive sweating (hyperhidrosis)have Botox injected into problem areas to reduce the amount of sweating. Why would this work?

Sunlight, ultraviolet light, and X-rays all darken skin because they increase blood flow to the dermis.

Sweat cools the body by

The layer of the epidermis that includes melanocytes and a single row of columnar cells that undergo mitosis is the

The arrector pili muscles are attached to

The hardness of a nail comes from

Sebaceous glands secrete

We enjoy sunbathing because it stimulates keratinocytes to release

Eccrine sweat glands differ from sebaceous glands

You step out of the shower and vigorously rub your skin with a towel. If you were able to analyze the towel, you would find skin cells. They are most likely

Exposure to ultraviolet radiation greatly increases the risk of developing

The flexible proteins that link the cell membranes of squamous epithelial cells in skin are

Melanocytes synthesize melanin, which protects underlying cells from the effects of ultraviolet light.

Introduction to Human Anatomy and Physiology

Chemical Basis of Life

Cells

Cellular Metabolism

Tissues

Skeletal System

Joints of the Skeletal System

Muscular System

Nervous System I: Basic Structure and Function

Nervous System II: Divisions of the Nervous System

Nervous System III: Senses

Endocrine System

Blood

Cardiovascular System

Lymphatic System and Immunity

Digestive System

Nutrition and Metabolism

Respiratory System

Urinary System

Water, Electrolyte, and Acid-Base Balance

Reproductive Systems

Pregnancy, Growth, and Development

Genetics and Genomics

Filters

The epidermis is about mm thick and the dermis is about mm thick.