Question 1

In-Text Figure Based Questions
-What are the body's two sources of cholecalciferol (vitamin D3)? (Figure 5-10)
A) air and water
B) air and food
C) sunlight and water
D) sunlight and food
E) air and sunlight

Accepted Answer

Figure 5-10 shows that the body's two sources of cholecalciferol (vitamin D3) are sunlight and food. Specifically, the figure indicates that UVB radiation from sunlight can trigger the synthesis of cholecalciferol in the skin, while certain foods (e.g. fatty fish, egg yolks) contain cholecalciferol that can be absorbed by the body. Therefore, option D (sunlight and food) is the correct choice.

Question 2

Wrinkles in individuals are the result of
A) increased production of epidermal layers.
B) loss of elastic fibers in the reticular layer of the dermis.
C) increased keratinization of the epidermis.
D) the loss of glands and hair follicles from the skin.
E) decreased thickness of the dermis.

Accepted Answer

Wrinkles are mainly caused by the loss of elastic fibers in the reticular layer of the dermis, which leads to a decreased ability of the skin to recoil and maintain its shape. Other factors such as aging, sun damage, and smoking can also contribute to the formation of wrinkles.

Question 3

Vanessa's 80-year-old grandmother sets her thermostat at 26°C (80°F) and wears a sweater on balmy springdays. When asked why, the grandmother says she feels cold. What is a possible cause for her feeling cold?

Accepted Answer

The answer of Vanessa's 80-year-old grandmother sets her thermostat at...

Question 4

Why is scab formation important in wound healing?

Accepted Answer

The answer of Why is scab formation important in wound...

Question 5

In-Text Figure Based Questions
-Which plexus supplies blood to the capillary loops that follow the epidermis-dermis boundary? (Figure 5-6)
A) submucosal plexus
B) mucosal plexus
C) subcapillary plexus
D) cutaneous plexus
E) epidermal plexus

Accepted Answer

The subcapillary plexus supplies blood to the capillary loops that follow the epidermis-dermis boundary.

Question 6

In-Text Figure Based Questions
-In which layer of the skin are melanocytes found? (Figure 5-8)
A) stratum basale
B) stratum spinosum
C) stratum granulosum
D) stratum lucidum
E) stratum corneum

Accepted Answer

Melanocytes are found in the stratum basale layer of the skin, which is the deepest layer of the epidermis.

Question 7

Explain how to use the mnemonic ABCD when checking for signs of skin cancer.

Accepted Answer

The answer of Explain how to use the mnemonic ABCD...

Question 8

Many lipid-soluble medications can be delivered by diffusion across the skin. This process is called transdermal administration and is commonly done by applying patches that contain the medication to the surface of the skin. These patches can be attached anywhere on the skin except the palms of the hands and the soles of the feet. Why?

Accepted Answer

The answer of Many lipid-soluble medications can be delivered by...

Question 9

Why would an elderly person be more prone to skin infections than a younger person?
A) Skin repairs take longer in the elderly.
B) The epidermis is thinner in the elderly.
C) There are fewer dendritic cells in the skin of the elderly.
D) Basal cell activity is reduced in the elderly.
E) All of the answers are correct.

Accepted Answer

All of the answers are correct. As people age, their skin naturally becomes thinner, drier, and less elastic. This makes their skin more prone to damage and more susceptible to infection. Additionally, the immune system's response to infection weakens as people age, making it harder for the body to fight off skin infections. Finally, the skin's ability to repair itself declines over time, further increasing the risk of infections.

Question 10

In a condition known as sunstroke, the victim appears flushed, the skin is warm and dry, and the body temperature rises dramatically. Explain these observations based on what you know concerning the role of the skin in thermoregulation.

Accepted Answer

The answer of In a condition known as sunstroke, the...

Question 11

In-Text Figure Based Questions
-What types of glands are found in the skin? (Figure 5-1)
A) salivary glands and submucosal glands
B) endocrine glands and salivary glands
C) mucus glands and submucosal glands
D) sebaceous glands and sweat glands
E) cerumen glands and endocrine glands

Accepted Answer

Figure 5-1 shows sebaceous glands and sweat glands present in the skin.

Question 12

A bacterial infection that is often fatal in burn patients is called
A) sepsis.
B) necrosis.
C) toxis.
D) pernicious.
E) noxious.

Accepted Answer

Sepsis is a severe bacterial infection that can occur in burn patients due to the loss of protective skin barriers. It can lead to septic shock, organ failure, and death if untreated.

Question 13

Why is regional infection or inflammation of the skin usually very painful?

Accepted Answer

The answer of Why is regional infection or inflammation of...

Question 14

Explain how skin helps to thermally regulate body temperature.

Accepted Answer

The answer of Explain how skin helps to thermally regulate...

Question 15

The effects of aging on the skin include
A) a decline in the activity of sebaceous glands.
B) increased production of vitamin D.
C) thickening of the epidermis.
D) an increased blood supply to the dermis.
E) a decreased number of sweat glands.

Accepted Answer

The answer of The effects of aging on the skin...

Question 16

In-Text Figure Based Questions
-Where do sebaceous glands and sebaceous follicles discharge their secretions? (Figure 5-13)
A) epidermis; hair follicle
B) hair follicle; epidermis
C) hair root; dermis
D) dermis; hair root
E) both into the dermis

Accepted Answer

Sebaceous glands and sebaceous follicles discharge their secretions into the hair follicle, which is within the epidermis.

Question 17

Anew mother notices that her 6-month-old infant has a yellow-orange complexion. Fearful that the child mayhave jaundice, she takes him to her pediatrician. After examining the child and learning about the infant's diet, the pediatrician declares him perfectly healthy and advises the mother to watch the child's diet. What is likely the cause for the change in skin color?

Accepted Answer

The answer of Anew mother notices that her 6-month-old infant...

Question 18

Why is a subcutaneous injection with a hypodermic needle a useful method of administering drugs?

Accepted Answer

The answer of Why is a subcutaneous injection with a...

Quiz 5: The Integumentary System

In-Text Figure Based Questions -What are the body's two sources of cholecalciferol (vitamin D3) ? (Figure 5-10)

Wrinkles in individuals are the result of

Vanessa's 80-year-old grandmother sets her thermostat at 26°C (80°F) and wears a sweater on balmy springdays. When asked why, the grandmother says she feels cold. What is a possible cause for her feeling cold?

Why is scab formation important in wound healing?

In-Text Figure Based Questions -Which plexus supplies blood to the capillary loops that follow the epidermis-dermis boundary? (Figure 5-6)

In-Text Figure Based Questions -In which layer of the skin are melanocytes found? (Figure 5-8)

Explain how to use the mnemonic ABCD when checking for signs of skin cancer.

Why would an elderly person be more prone to skin infections than a younger person?

In a condition known as sunstroke, the victim appears flushed, the skin is warm and dry, and the body temperature rises dramatically. Explain these observations based on what you know concerning the role of the skin in thermoregulation.

In-Text Figure Based Questions -What types of glands are found in the skin? (Figure 5-1)

A bacterial infection that is often fatal in burn patients is called

Why is regional infection or inflammation of the skin usually very painful?

Explain how skin helps to thermally regulate body temperature.

The effects of aging on the skin include

In-Text Figure Based Questions -Where do sebaceous glands and sebaceous follicles discharge their secretions? (Figure 5-13)

Why is a subcutaneous injection with a hypodermic needle a useful method of administering drugs?