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***In the skeletal muscle thin filaments are composed of: A. Actin B. Myosin C. Tropomyosin D. Light and heavy chains E. A and C F. B and D {Ans: E. A and C}***Select a false sentence: A. Microvilli extend from the cell surface as a cytoplasmic process B. Stereocilia are motile, branches microvilli C. The striated border in the kidney tubule cells is called the brush border D. Cilia contains an organized core of microtubules arranged in a 9+1 pattern E. A and C are correct F. B and D are correct {Ans: F. B and D are correct}***Which type of cartilage forms the skeleton of the fetus? A. Hyaline cartilage B. Elastic cartilage C. Fibrocartilage D. All of the above E. None of the above F. Hyaline and elastic cartilage {Ans: A. Hyaline cartilage}does not have perichondrium A. Elastic B. Fibrocartilage C. Hyaline cartilage D. None of the above E. All of the above {Ans: B. Fibrocartilage}***Chromophobes: A. They stain blue in mallory's staining B. They produce FSH and stimulate spermatogenesis C. They produce LH and promote ovarian follicle maturation D. One of three cell types in hypophysis E. All answers are correct F. A