Bone Anatomy and Growth Quiz
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Questions and Answers

Which bone cell has a distinct ruffled border that has direct contact to the bone, causing it to break down?

  • Osteocyte
  • Osteoblast
  • Osteoclast (correct)
  • None of the above, bone does not break down
  • What type of bone cells monitor the bone matrix?

  • Osteocytes (correct)
  • Osteoclasts
  • Both B and C
  • Osteoblasts
  • When a fractured bone undergoes the self-repair process, the fibrocartilaginous callus is converted into what?

  • Spongy Bone
  • Osteoblasts
  • Osteoporosis
  • Bony Callus (correct)
  • Which choice about the gross anatomy of the bone is incorrect?

    <p>Spongy bone only contains yellow bone marrow</p> Signup and view all the answers

    Which bone fracture breaks along the vertical axis of the bone?

    <p>Linear</p> Signup and view all the answers

    Which hormone is used for calcium deposition?

    <p>Calcitonin</p> Signup and view all the answers

    In bone health, what is a group of diseases in which bone resorption outpaces bone deposition?

    <p>Osteoporosis</p> Signup and view all the answers

    What are concentric layers of the bone that form in an osteon?

    <p>Lamellae</p> Signup and view all the answers

    During endochondral ossification, which cell breaks down the bone to form the medullary cavity?

    <p>Osteoclasts</p> Signup and view all the answers

    What does bone develop from during endochondral ossification?

    <p>Hyaline cartilage</p> Signup and view all the answers

    What hormone heavily influences growth during infancy and childhood?

    <p>Growth hormone</p> Signup and view all the answers

    When does calcification of the epiphysis begin during long bone formation?

    <p>Epiphysis</p> Signup and view all the answers

    What is the main characteristic of extensibility associated with?

    <p>Elastic (titin) filaments</p> Signup and view all the answers

    What would be the likely symptoms of curare poisoning based on the provided information?

    <p>Curare will only affect muscles with ACh receptors, paralyzing them</p> Signup and view all the answers

    During muscle contraction, what occurs when thin filaments move over thick filaments?

    <p>Sliding past each other</p> Signup and view all the answers

    What happens during muscle contraction?

    <p>Thick filaments shorten so that thin filaments slide past</p> Signup and view all the answers

    Which process is associated with sarcomere extensibility?

    <p>Titin stretching and recoiling</p> Signup and view all the answers

    What is the effect of curare binding to ACh receptor sites?

    <p>Paralysis of muscles with ACh receptors</p> Signup and view all the answers

    Which of the following best explains why long bones are the thickest midway along the diaphysis?

    <p>Wolff's Law</p> Signup and view all the answers

    What is untrue about bone deposition?

    <p>Osteoclasts break down bone using H+ ions and lysosomal enzymes</p> Signup and view all the answers

    In which part of an osteon can you find canaliculi and what is their function?

    <p>Canaliculi - stores osteocytes/maintains the bone matrix</p> Signup and view all the answers

    Which of the following occurs in the spongy bone of the epiphysis?

    <p>hematopoiesis</p> Signup and view all the answers

    Which of the following is found in the Haversian canal?

    <p>vessels and nerves</p> Signup and view all the answers

    Which order correctly represents the sequential steps in bone repair?

    <p>3,4,1,2</p> Signup and view all the answers

    What would be the effect of adding more myoglobin to a muscle fiber?

    <p>Fast oxidative and slow oxidative fibers</p> Signup and view all the answers

    Which muscle property is most responsible for the autorhythmicity of the heart?

    <p>Electrical excitability</p> Signup and view all the answers

    During a muscle contraction, what moves along what towards the M line?

    <p>Myosin; actin</p> Signup and view all the answers

    Which of the following proteins are involved in regulating muscle contraction?

    <p>Tropomyosin and troponin</p> Signup and view all the answers

    What effect would adding more myoglobin to a muscle fiber have on the appearance of different bands?

    <p>The I bands to appear wider</p> Signup and view all the answers

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