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Mitosis primarily occurs in one layer of the epidermis, the stratum ________.

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As a person balds, terminal hair is replaced by vellus.

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Tattoos are permanent because


A) Langerhans cells do not recognize the pigments as foreign.
B) the melanocytes are altered to produce different colors.
C) the pigments are injected in the dermis.
D) the pigments are injected in the stratum basale, which continuously replaces the superficial layers that are sloughed off.

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Which layer of the integument are toenails and fingernails derived from?


A) dermis
B) hypodermis
C) epidermis

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C

  Use the diagram above to answer the following questions. -Which letter indicates a specialized sensory receptor? A)  A B)  B C)  C D)  D E)  E Use the diagram above to answer the following questions. -Which letter indicates a specialized sensory receptor?


A) A
B) B
C) C
D) D
E) E

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List the layers of the epidermis found in thick skin from the deepest layer to the most superficial layer, and provide a few descriptive terms that characterize each layer.

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Stratum basale: single layer of cells, r...

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The epidermal layer in which the cells are actively dividing is the ________.

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Found in the stratum spinosum, dendritic cells are cells of the ________ system.

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The white half-moon visible under the proximal part of a fingernail is the


A) matrix.
B) bed.
C) lunule.
D) cuticle.

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Nutrients enter a hair follicle through the dermal papilla.

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Most ________ glands open into hair follicles.

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sebaceous

An immediate concern with a burn patient is loss of fluids, so fluids must be administered immediately.

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The cells in the skin that store the most melanin granules are


A) dendritic cells.
B) tactile epithelial cells.
C) basal keratinocytes.
D) melanocytes.

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Excessive exposure to ultraviolet radiation (UVR) can lead to skin cancer, but minimal UVR exposure can lead to


A) porphyria.
B) vitiligo.
C) vitamin D deficiency.
D) ulcerative colitis.

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Which is the most abundant and widespread type of sweat gland?


A) eccrine
B) apocrine
C) holocrine
D) endocrine

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The epidermal stem cells that give rise to hair matrix cells are located in a bulge in the ________, near the insertion of the arrector pili muscle.

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external root sheath

Name the location and function of these cells: keratinocytes, tactile epithelial cells, melanocytes, and dendritic cells.

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Keratinocytes are found in all layers of...

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This stratum ________ of the epidermis contains the greatest number of cellular layers in both thick and thin skin.

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Diffusion of chemicals from a transdermal patch must reach what layer of the skin to be effective?


A) dermis
B) hypodermis
C) epidermis

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The epidermis is a keratinized ________ epithelium.


A) compound columnar
B) stratified squamous
C) simple squamous
D) simple areolar

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