API Laboratory 6 Questions

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

Addison's disease

What genetic disorder results in lack of skin pigmentation and an increased chance of developing skin cancer?

Albinism

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

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

Liver

List three factors the effect skin color.

Melanin production Carotene Dermal blood supply

The most dangerous form of skin cancer is called ___________.

Melanoma

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 cancers

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

Stratum Basale

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

Stratum Corneum

Which layer of the epidermis is the thickest layer?

Stratum Corneum

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 (C)ome (L)ets (G)et (S)un (B)urned

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

Thick skin is the only skin found on the palms of the hand & the soles of the feet

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

Vitiligo

Why does exposure to sunlight darken skin

When exposed to ultraviolet radiation melanocytes in the epidermis and dermis synthesize the pigment melanin, darkening the skin


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