Reference no: EM133352687

QUESTION 1

Exfoliation is often recommended for helping to eliminate blackheads in the skin. This involves scrubbing the affected areas with a coarse or gritty face wash to remove excessive amounts of dead skin cells that can lead to clogged pores.

Why does this not cause bleeding?

The dermis is avascular

The hypodermis is avascular

The epidermis is avascular

Dead skin cells block the blood vessels

QUESTION 2

Being a lifeguard and sitting in the sun for long hours every day, why would Chad's dark skin be less likely to burn than his friends who had much fairer, lighter-colored skin?

Chad's dark skin contains more protective melanin in each of his melanocytes

Chad's dark skin contains more protective stratified squamous layers in his epidermis compared to his fair-skinned friends

Chad's dark skin contains more numerous protective melanocytes

Chad's dark skin contains more blood vessels and sensory receptors in his dermis compared to his fair-skinned friends

QUESTION 3

How would you characterize the type of skin on Chad's leg?

Thick skin containing 5 layers

Thin skin, containing 3-4 layers

Thin skin containing 1 layer

Thick skin containing 3-4 layers

QUESTION 4

The dermatologist examined the cluster of flesh-colored bumps near the edge of Chad's scar. To his surprise, she said she was more concerned about these small bumps than the large scar that had formed over and above the original borders of the scar. She said the small bumps were warts, commonly caused by a virus called Human Papillomavirus (HPV). You can read more about HPV with this link from the CDC.

Which layer of skin do warts occur?

Epidermis

Hypodermis

Papillary dermal layer

Reticular dermal layer

QUESTION 5

In order to proliferate and spread, the virus infects the layer of epidermal cells which is rapidly dividing. Which cells would the virus target?

Eccrine sweat glands

Stratum corneum

Stratum basale

Sebaceous glands

QUESTION 6

The doctor diagnosed Chad's small bumps as genital warts caused by HPV. You can read more about HPV with this link from the CDC and this link from the American Cancer Society. Which of the following statements best describes how HPV spreads?

Contact between cutaneous or mucous membranes

Contact between body fluids (semen, saliva, or blood) and mucous membranes

Contact serosal fluid and mucous membranes

All of the above

QUESTION 7

Liquid nitrogen is used to treat warts. It can get to -300 degrees and will freeze the wart to kill the cells that are dividing. After treatment, a blister will form before the wart falls off.

What is found inside the blister?

Fluid

Ceruminous fluid

Keratin

Melanin

QUESTION 8

In most cases, people are able to clear the low-risk strains of HPV from their bodies in about 1-2 years. It takes the immune system this long to -develop antibodies to completely remove the virus from the body. Which cell is a link between the integumentary system and the immune system?

Keratinocytes

Dendritic cells

Stratified squamous epithelial cells

Melanocytes

QUESTION 9

Symptoms of genital warts can occur as early as 3 weeks after exposure, but more often take much longer. Based on what you know about the skin, why don't symptoms occur sooner than 3 weeks?

HPV infects the stratum basale and it takes 25-35 days for those cells to move to the surface of the epidermis

Epidermal cells do not experience mitosis

Fibrocysts in the dermis wall off the virus initially. The wart becomes visible when the virus becomes strong enough to break through the granuloma

Melanin produced in melanocytes can block the ability to see the wart for several weeks

QUESTION 10

The doctor confirmed that a risk factor for cancer is moles which change shape or grow. Which of the following is also a risk factor for skin cancer?

Asymmetrical moles

Moles that are blue or black in color

Moles that are larger than a pencil eraser

All of the above are risk factors for skin cancer