A&P Test 2: Chapter 6 – Flashcards
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The reddish color of the skin of the lips is primarily due to the presence of which pigment?
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Hemoglobin
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The __________ glands are a source of sex pheromones.
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apocine
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Excessive hairiness is called __________.
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hirsutism
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Which cutaneous glands are concerned with cooling the body?
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Merocrine glands
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What type of hair is present prenatally and usually replaced by birth?
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Lanugo
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The hypodermis is characterized by an abundance of which tissue?
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Adipose tissue
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The base where a hair follicle originates in the skin is known as the __________.
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Hair bulb
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The least common, but most deadly, type of skin cancer is __________.
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melanoma
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The __________ is absent from most epidermis.
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stratum lucidum
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Calluses or corns are the result of accelerated multiplication by ___________.
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keratinocytes
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A hair cycle consists of three developmental stages in which order?
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Anagen, catagen, and telogen
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The skin discoloration most likely to suggest physical abuse is __________.
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hematoma
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The oil of your scalp is secreted by __________ glands associated with the hair follicles.
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sebaceous
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A __________ is an elevated patch of melanized skin.
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mole
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Which of the following is not found in the epidermis?
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Fibroblast
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Increased bilirubin levels cause a skin discoloration called __________.
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jaundice
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In whom are mammary glands found?
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In lactating females
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Which two strata of the epidermis are most susceptible to cancer?
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Stratum spinosum and stratum basale
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Which of the following cells is largely responsible for skin color?
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Melanocyte
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Which layer of the epidermis consists of up to 30 layers of dead cells?
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Stratum corneum
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In which of the following skin layers would a subcutaneous injection be administered?
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Hypodermis
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Each hair grows in an oblique epithelial tube called a(an)
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hair follicle
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What type of tissue is found in the most superficial layer of skin?
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Stratified squamous epithelium
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A pilus is a __________.
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hair
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Which of the skin layers below is the most superficial?
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Epidermis
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Basal cell carcinoma initially affects cells of the stratum __________.
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basale
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Variations in hair color arise from differing amounts of
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eumelanin and pheomelanin
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The "ABCD rule" for recognizing early signs of malignant melanoma refers to the following characteristics of the lesion:
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asymmetry, border irregularity, color, and diameter
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Secretions from __________ glands contribute to the acid mantle that inhibits bacterial growth on the skin.
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merocrine sweat
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Fingerprints left on things we touch are associated with our __________.
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dermal papillae
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The narrow zone of dead skin overhanging the proximal end of a nail is called the __________.
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eponychium
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Looking at a slide of thin skin under the microscope, you note that the stratum basale is the __________ layer of the epidermis in from the surface.
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fourth
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The contraction of the piloerector muscles (pilomotor muscle or arrector pili) in humans causes __________.
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hairs to stand on end with no apparent function
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Which of the following best describes the composition of the dermis?
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Collagen and fibroblasts
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Mammary glands are modified __________ glands that develop within the female breasts.
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apocrine
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Blood vessels in the __________ provide a hair with its sole source of nutrition.
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dermal papilla
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The most immediate threat to the life of a patient with severe burns is __________.
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fluid loss
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Mitosis in the __________ accounts for growth of the nail.
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nail matrix
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Ethnic differences in skin color are primarily caused by differences in ___________.
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the quantity of melanin produced
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__________ is/are formed partly from the secretions of glands in the external ear canal.
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Cerumen
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Which of the following are associated with the sense of touch?
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Tactile (Merkel) cells
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The fastest rate of mitosis happens in the __________.
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stratum basale
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Which of the following cells stand guard against toxins, microbes and other pathogens?
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Dendritic (Langerhans) cells
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Which skin color is most likely to result from anemia?
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Pallor
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Leather is made of the __________ layer of the dermis.
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reticular
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Skin covering the __________ has sweat glands but no hair follicles or sebaceous glands.
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fingertips
