biol252-practice-exam - MULTIPLE CHOICE. Choose the one...

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MULTIPLE CHOICE. Choose the one alternative that best completes the statement or answers the question. 31) Select the correct statement regarding epithelia. A) Stratified epithelia are present where protection from abrasion is important. B) Simple epithelia form impermeable barriers. C) Stratified epithelia are tall, narrow cells. D) Pseudostratified epithelia consist of at least two layers of cells stacked on top of one another. 32) The three main components of connective tissue are: A) alveoli, fibrous capsule, and secretory cells. B) collagen, elastin, and reticular fibers. C) fibroblasts, chondroblasts, and osteoblasts. D) ground substance, fibers, and cells. 33) ________ epithelium appears to have two layers of cells, but all the cells are in contact with the basement membrane. A) Pseudostratified columnar B) Stratified columnar C) Transitional D) Stratified cuboidal 34) Pseudostratified columnar epithelium: A) contains cilia. B) possesses numerous goblet cells. C) lines the respiratory tract. D) all of these are correct. 35) The reason that intervertebral discs exhibit a large amount of tensile strength to absorb shock is because they possess: A) collagen fibers. B) reticular fibers. C) hydroxyapatite crystals. D) elastic fibers. 36) Nutrients reach the surface of the skin (epidermis) through the process of: A) absorbing materials applied to the surface layer of the skin. B) diffusing through the tissue fluid from blood vessels in the dermis. C) filtration. D) utilizing the products of merocrine glands to nourish the epidermis. 37) The integumentary system is protected by our immune system through the action of cells that arise from bone marrow and migrate to the epidermis. Which of the following cells serve this immune function? A) keratinocytes, because they are so versatile
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This note was uploaded on 03/20/2008 for the course BIOL 252 taught by Professor Johnson during the Spring '07 term at UNC.

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biol252-practice-exam - MULTIPLE CHOICE. Choose the one...

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