LAB 6 Powerpoint & MAP Questions

A person with ____________ will have a bronze-like appearance of their skin and nails and have hyperpigmentation of their gums.

Addison's disease

ABCDE is an easy mnemonic device that is used while inspecting suspicious moles for indicators of skin cancer. Which of the following letters is NOT correctly matched with its definition?

D = density

Which of the following is NOT a factor affecting skin color?

Keratinocytes

What disease is associated with this skin condition? (Cyanosis)

Renaud's syndrome

Skin color may have a diagnostic function. Imagine one of your friends has an obvious orange tint to her skin. What would be a logical conclusion of your observation?

She may have a real taste for consuming carrots.

What genetic disorder depicted in this image results in a lack of skin pigmentation which increases the chance of developing skin cancer?

albinism

Skin cancers are the most common form of cancers and they range from benign to malignant. Which of the following types of skin cancers is considered the most common but also the LEAST dangerous?

basal cell carcinoma

Some burn victims benefit from skin grafts cultured from their own skin cells. Which skin cells are the most likely candidates for such a culture?

basal cells

Eating too many carrots can result in an orangish skin tint. What is the name of the pigment that is responsible for the orangish coloration?

carotene

Diseases that involve not getting enough oxygen-rich blood to the blood vessels, such as certain pulmonary and heart diseases can cause the skin to take on a bluish color. What is the name of the abnormal condition of having bluish skin coloration?

cyanosis

Which cutaneous membrane must be reached for a tattoo to become permanent?

dermis

When you cut yourself and bleed/feel the sensation of pain, which cutaneous membranes have been damaged?

dermis and epidermis

What structure is responsible for increasing surface area to provide for the strength of attachment between the epidermis and dermis?

epidermal ridge

In a second-degree burn, the entire epidermis and perhaps some of the dermis are damaged. Which of the following functions of the skin is NOT typically affected by a second-degree burn?

excretion and thermoregulation through sweat glands

Compare the number of melanocytes between fair-skinned individuals and dark-skinned individuals.

fair- and dark-skinned people have the approximately the same number of melanocytes

Which of the following skin condition could this patient likely be suffering from? (yellow eyes)

jaundice

What organ may be involved if a person presents with jaundice?

liver

Why does exposure to sunlight darken skin?

melanocytes will produce more pigment in response to UV rays

The most dangerous form of skin cancer is called ___________.

melanoma

Which layer of the cutaneous membrane lies directly inferior to the epidermis?

papillary layer of the dermis

What is the function of Langerhans cells (dendritic cells) which are located in the stratum spinosum?

protect the body from microbes and help in the immune response against superficial skin cancer

The dermis is composed of the papillary layer and the __________.

reticular layer

Melanocytes __________.

store melanin in melanosomes

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

stratum basale

What layer of the epidermis contains melanocytes, Merkel cells, and stem cells?

stratum basale

Which of the following is the correct order of epidermal layers of thick skin from deep to superficial?

stratum basale, stratum spinosum, stratum granulosum, stratum lucidum, stratum corneum

Which layer of the epidermis is the thickest layer?

stratum corneum

Which of the following layers is targeted by liposuction?

the hypodermic

Healthy skin cells require a constant supply of blood. In decubitus ulcers, or bed sores, this blood supply is hindered because superficial blood vessels are compressed. Which layer(s) of the skin hold(s) such compressed blood vessels?

the papillary and reticular layers of the dermis

The stratum lucidum is only found in thick skin. What is another difference when comparing thick skin to regular (thin) skin?

thick skin has a thicker stratum corneum

What autoimmune disorder causes the destruction of melanocytes resulting in patches of skin void of pigment?

vitiligo