A&P Questions 20-30

The epidermis consists of five layers of cells, each layer with a distinct role to play in the health,
well-being, and functioning of the skin. Which of the following layers is responsible for cell division and replacement?

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The epidermis consists of five layers of cells, each layer with a distinct role to play in the health,
well-being, and functioning of the skin. Which of the following layers is responsible for cell division and replacement?

The integumentary system is protected by the action of cells that arise from bone marrow and
migrate to the epidermis. Which of the following cells serve this function?

macrophages called dendritic cells (Langerhans Cell)

Water loss through the epidermis could cause a serious threat to health and we-lbl eing. Which of
the following protects us against excessive water loss through the skin?

Lamellated granules of the cells of the stratum granulosum, a glycolipid that is secreted into extracellular spaces.

The dermis is a strong, flexible connective tissue layer. Which of the following cell types are likely
to be found in the dermis?

fibroblasts, macrophages, and mast cells

The dermis has two major layers. Which layer constitutes 80% of the dermis and is responsible for the tension lines in the skin?

The reticular layer

Despite its apparent durability, the dermis is subject to tearing. How might a person know that the
dermis has been previously stretched and/or torn?

The appearance of visible, silvery-white scars is an indication of stretching of the dermis.

The papillary layer of the dermis is connective tissue heavily invested with blood vessels. The
superficial surface has structures called:

Dermal Papillae

The design of a person's epidermal ridges is determined by the manner in which the papillae rest
upon the dermal ridges to produce the specific pattern known as handprints, footprints, and
fingerprints. Which of the following statements is true regarding these prints or ridges?

B) They are genetically determined, therefore unique to each person.

Which of the following statements indicates the way in which the body's natural defenses protect
the skin from the effects of UV damage

prolonged exposure to the sun induces melanin dispersion, which in turn acts as a natural sunscreen.

Changes in the color of skin are often an indication of a homeostatic imbalance. Which of the
following changes would suggest that a patient is suffering from Addison's disease?

A) The skin takes on a bronze or metallic appearance.