HCS 216 Week 5 Knowledge Checks- Week 5

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HCS 216 Week 5 Knowledge Checks- Week 5
Complete the University of Phoenix Material: Week 5 Knowledge Checks
1.

Identify an accurate statement about melanin.

· A.

Melanin is produced by cells located deep inside the hypodermal layer of the skin.

· B.

There is no relation between the amount of melanin produced and skin color.

· C.

When melanin is evenly distributed across the skin, it forms freckles.

· D.

Melanin is synthesized by melanocytes only in areas where it is needed.
2.

What is the name of the fibrous protein that fills up dead epidermal cells as they are pushed to the surface of the skin?

· A.

Collagen

· B.

Keratin

· C.

Actin

· D.

Myosin
3.

How do sebaceous glands differ from sweat glands?

· A.

Sebaceous glands become active only at puberty, whereas sweat glands are active in people of all ages.

· B.

Sebaceous glands are located in the epidermal layer of the skin, whereas sweat glands are located in the hypodermal layer of the skin.

· C.

Sebaceous glands are distributed over the entire surface of the skin, whereas sweat glands are only found in hair-covered areas.

· D.

Sebaceous glands help retain moisture in the body by preventing the skin from drying out, whereas sweat glands contribute to an average fluid loss of 500 mL per day.
4.

Which of the following can be regarded as the largest organ in the human body?

· A.

The brain

· B.

The liver

· C.

The heart

· D.

The skin
5.

In the context of the layers of the skin, identify a difference between the epidermis and the dermis.

· A.

The epidermis contains nerve cells, whereas the dermis does not contain any nerve cells.

· B.

The epidermis contains many blood vessels called capillaries, whereas the dermis does not contain any blood vessels.

· C.

The epidermis is the innermost layer of the skin, whereas the dermis is the outermost layer.

· D.

The epidermis does not have any muscular tissue, whereas the dermis contains involuntary muscles.
6.

Identify an accurate statement about the epidermal layer of the skin.

· A.

The epidermis is made up of many layers of stratified squamous epithelium.

· B.

The epidermis is highly vascular and has a rich nerve supply.

· C.

The cells of the epidermal layer of the skin are not continuously replaced.

· D.

Melanocytes are not present in the epidermal layer of the skin.
7.

9-year-old Josh runs outside to play in the snow. The temperature outside is low, and though Josh is wearing a sweater, in a few minutes, he begins to feel very cold. With regard to the role of the integumentary system in temperature regulation, what changes are most likely to take place in Josh's body in response to these external conditions?

· A.

Josh's body will signal the blood vessels in his skin to increase in diameter.

· B.

Vasoconstriction will take place, which will force blood away from Josh's skin back toward the core of his body.

· C.

Vasodilation will take place, which will force the blood in Josh's body to rise to the surface of his skin.

· D.

The arrector pili in Josh's skin will relax, and the hairs on his skin will stop standing up.
8.

Identify an accurate statement about the role of the integumentary system in the regulation of body temperature.

· A.

The arrector pili in the skin relax in response to low environmental temperatures.

· B.

Sweat glands in the skin become more active as temperatures decrease.

· C.

Vasoconstriction takes place under cold conditions and forces blood away from the surface of the skin.

· D.

The body signals the blood vessels in the skin to increase in diameter when temperatures decrease.
9.

Which of the following occurs in response to high environmental temperatures?

· A.

Vasodilation

· B.

Vasoconstriction

· C.

The contraction of arrector pili in the skin

· D.

A decrease in the diameter of blood vessels
10.

What is the general term used to describe the highly contagious fungal infection that is commonly known as athlete's foot?

· A.

Tinea cruris

· B.

Tinea corporis

· C.

Tinea unguium

· D.

Tinea pedis
11.

Identify an accurate statement about infections of the skin.

· A.

Genital herpes is a skin infection caused by the herpes simplex type 1 virus.

· B.

Warts on the skin are caused by the bacterium staphylococcus.

· C.

Cellulitis is a condition that results in the inflammation of the skin and subcutaneous tissue.

· D.

Warts that are found in areas around the genitals are known as plantar warts.
12.

15-year-old Stephanie has been experiencing severe itching in the folds of her skin, especially in the areas around her groin, under her arms, around her wrists, and under her breasts. In a few days, she notices the formation of pustules and vesicles in the affected areas of her skin. On consulting a dermatologist, she is told that her skin has been infected by a tiny mite, and she is given a specially formulated cream, which can kill the mites on application. Based on the information provided in this scenario, identify the condition from which Stephanie is most likely suffering.

· A.

Scabies

· B.

Acne

· C.

Common warts

· D.

Tinea corporis
13.

Identify an accurate statement about burns.

· A.

A fourth-degree burn is a partial-thickness burn that damages only the epidermis.

· B.

A second-degree burn penetrates to the bone and destroys muscles and tendons.

· C.

A first-degree burn typically affects the entire epidermis and a portion of the dermis.

· D.

A third-degree burn is classified as a full-thickness burn as it affects all three layers of the skin.
14.

What type of burn causes a victim to feel no pain at the affected site?

· A.

A first-degree burn

· B.

A second-degree burn

· C.

A third-degree burn

· D.

A fourth-degree burn
15.

While on a camping trip, an intoxicated man accidently trips and falls into a huge bonfire. By the time his friends rescue him, he receives extensive burns on both of his arms, his head, and his neck. Using the "rule of nines," calculate the percentage of burns the man may have received.

· A.

27%

· B.

36%

· C.

45%

· D.

54%
16.

John has had a mole on the upper portion of his back ever since he was a child. Over the past few weeks, John has noticed that the mole on his back has been increasing in size and changing in shape and color. Concerned with the sudden changes, John consults Dr. Rick, a dermatologist, about his problem. Dr. Rick examines the mole and orders an immediate biopsy. On receiving the results of the biopsy, Dr. Rick tells John that his mole needs to be surgically removed immediately and that he may even need to undergo chemotherapy. Based on the information provided in this scenario, from which condition is John most likely suffering?

· A.

Malignant melanoma

· B.

Cellulitis

· C.

Basal cell carcinoma

· D.

Seborrheic keratosis
17.

Identify an accurate statement about basal cell carcinoma.

· A.

Basal cell carcinoma begins as a fluid-filled vesicle.

· B.

Basal cell carcinoma only affects the scalp and lower lip.

· C.

Basal cell carcinoma begins as a papule that enlarges in size to form an ulcer surrounded by a whitish border.

· D.

Basal cell carcinoma may appear as a black or brown irregular patch on the skin that rapidly grows in size and spreads to surrounding areas.
18.

Which of the following is a type of cancer that typically occurs on the scalp and the lower lip?

· A.

Basal cell carcinoma

· B.

Squamous carcinoma

· C.

Malignant melanoma

· D.

Seborrheic keratosis
 
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