36 Study Guide

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NursyDaisy
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137403
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36 Study Guide
Updated:
2012-04-06 13:38:39
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Pathophysiology
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Description:
Structure and Function of the Musculoskeletal System
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  1. The skeletal system (more than one answer may be correct):
    a. supports tissues.
    b. binds organs together.
    c. protects CNS structures.
    d. participates in blood cell formation.
    e. lines body cavities.
    • a. supports tissues.
    • c. protects CNS structures.
    • d. participates in blood cell formation.
  2. Sialoprotein:
    A. promotes resorption.
    B. promotes calcification.
    C. binds calcium.
    D. stabilizes the basement membrane of bones.
    B. promotes calcification.
    (this multiple choice question has been scrambled)
  3. Volkmann's canals
    A. contains blood vessels
    B. irregular meshwork
    C. small canals that connect bone cells
    D. concentric rings
    E. cavities where bone cells are housed
    A. contains blood vessels
    (this multiple choice question has been scrambled)
  4. Trabeculae
    A. small canals that connect bone cells
    B. concentric rings
    C. cavities where bone cells are housed
    D. irregular meshwork
    E. contains blood vessels
    D. irregular meshwork
    (this multiple choice question has been scrambled)
  5. Lamellae
    A. concentric rings
    B. contains blood vessels
    C. small canals that connect bone cells
    D. irregular meshwork
    E. cavities where bone cells are housed
    A. concentric rings
    (this multiple choice question has been scrambled)
  6. The diaphysis is the:
    A. shaft of long bones.
    B. surface of a synovial cavity.
    C. lattice framework of spongy bones.
    D. rounded end of long bones.
    A. shaft of long bones
    (this multiple choice question has been scrambled)
  7. A function of the epiphyseal plate that is not a function of the articular cartilage is to:
    A. provide sensory nerves to bone.
    B. enable bone to increase in length.
    C. enable articulation of bones.
    D. repair damaged bone tissue.
    B. enable bone to increase in length.
    (this multiple choice question has been scrambled)
  8. The remodeling of bone is done by basic multicellular units that consist of bone precursor cells. Precursor cells:
    A. are located on free surfaces of bone and along vascular channels.
    B. differentiate into osteoclasts and osteoblasts.
    C. Neither a nor b is correct.
    D. Both a and b are correct.
    D. Both a and b are correct. (a. differentiate into osteoclasts and osteoblasts. b. are located on free surfaces of bone and along vascular channels.)
    (this multiple choice question has been scrambled)
  9. Identify the sequence of bone healing in fractures and surgical injuries.
    1. procallus formation
    2. callus formation
    3. hematoma formation
    4. callus replacement with lamellar or trabecular bone
    5. periosteum and endosteum remodeling
    A. 2, 1, 3, 4, 5
    B. 1, 2, 3, 5, 4
    C. 1, 2, 3, 4, 5
    D. 3, 1, 2, 4, 5
    E. 3, 2, 1, 4, 5
    D. 3, 1, 2, 4, 5
    (this multiple choice question has been scrambled)
  10. Joints are classified functionally and structurally. Which is a proper functional and structural relationships?
    A. diarthrosis/fibrous
    B. synarthrosis/cartilaginous
    C. amphiarthrosis/fibrous
    D. diarthrosis/synovial
    E. synarthrosis/synchondrosis
    D. diarthrosis/synovial
    (this multiple choice question has been scrambled)
  11. In older individuals, the bone remodeling cycle:
    A. is faster becasue osteoclastic activity is enhanced.
    B. Both a and b are correct.
    C. is enhanced because mineralization increases.
    D. has fewer bone cells because the bone marrow becomes infiltrated with fat.
    E. has more precursor cells.
    D. has fewer bone cells because the bone marrow becomes infiltrated with fat.
    (this multiple choice question has been scrambled)
  12. Which is not included in a motor unit?
    A. anterior horn cell
    B. upper motor neuron
    C. muscle fibers
    D. motor nerve axons
    B. upper motor neuron
    (this multiple choice question has been scrambled)
  13. The perimysium is to a fasciculus as the:
    A. periosteum is to a bone.
    B. muscle cell is to the endomysium.
    C. myofibril is to a muscle fiber.
    D. muscle is to epimysium.
    E. epimysium is to the endomysium.
    A. periosteum is to a bone.
    (this multiple choice question has been scrambled)
  14. Sarcomere
    A. flattened, tubelike network
    B. membrane covering the muscle cell
    C. tubules that run perpendicular to muscle myofibrils
    D. unit of contraction
    E. calcium transport
    D. unit of contraction
    (this multiple choice question has been scrambled)
  15. Sarcolemma
    A. unit of contraction
    B. calcium transport
    C. tubules that run perpendicular to muscle myofibrils
    D. membrane covering the muscle cell
    E. flattened, tubelike network
    D. membrane covering the muscle cell
    (this multiple choice question has been scrambled)
  16. Sarcoplasmic reticulum
    A. membrane covering the muscle cell
    B. tubules that run perpendicular to muscle myofibrils
    C. calcium transport
    D. unit of contraction
    E. flattened, tubelike network
    C. calcium transport
    (this multiple choice question has been scrambled)
  17. Which is not a characteristic of type I muscle fibers?
    A. high resistance to fatigue
    B. profuse capillary supply
    C. sparse capillary supply
    D. slow contraction speed
    E. oxidative metabolism
    C. sparse capillary supply
    (this multiple choice question has been scrambled)
  18. Which protein is found in the thick myofilaments?
    A. actin
    B. tropomyosin
    C. troponin
    D. a, c, and d are correct.
    E. myosin
    E. myosin
    (this multiple choice question has been scrambled)
  19. An important function of the transverse tubules is to:
    A. provide organic nutrients to muscle fibers.
    B. enable regeneration of muscle fibers.
    C. allow for intracellular calcium uptake.
    D. initiate fiber contraction.
    C. allow for intracellular calcium uptake.
    (this multiple choice question has been scrambled)
  20. The ion necessary for coupling is:
    A. calcium.
    B. magnesium.
    C. phosphate.
    D. potassium.
    E. sodium.
    A. calcium.
    (this multiple choice question has been scrambled)
  21. Aerobic respiration:
    A. causes an increase in the amount of lactic acid.
    B. uses more glycogen to produce ATP than anaerobic respiration.
    C. permits the body brief periods during which it does not require oxygen.
    D. yields more molecules of ATP than anaerobic respiration.
    E. leads to oxygen debt.
    D. yields more molecules of ATP than anaerobic respiration.
    (this multiple choice question has been scrambled)
  22. Repayment of oxygen debt:
    A. converts lactic acid to glycogen.
    B. replenishes ATP stores.
    C. replenishes phosphocreatine stores.
    D. a, b, and c are correct.
    E. Both b and c are correct.
    D. a, b, and c are correct. (a. converts lactic acid to glycogen. b. replenishes ATP stores. c. replenishes phosphocreatine stores.)
    (this multiple choice question has been scrambled)
  23. The strength of muscle contraction depends on the:
    a. extent of the load.
    b. initial length of muscle fibers.
    c. recruitment of additional motor units.
    d. nerve innervation ratios.
    e. All of the above are correct.
    e. All of the above are correct.
  24. Attempting to push an object that is too heavy to move is an example of a(n) ? contraction
    A. concentric
    B. flaccid
    C. isotonic
    D. tetanic
    E. isometric
    E. isometric
    (this multiple choice question has been scrambled)
  25. Which does not happen with muscle as individuals grow older?
    A. The amount of RNA increases to compensate for decreased size of motor units.
    B. Mitochondrial volume decreases.
    C. Type II fibers may decrease.
    d. All of the above occur with advancing age.
    A. The amount of RNA increases to compensate for decreased size of motor units.
    (this multiple choice question has been scrambled)

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