Anatomy Test Part 2

206 Questions | Total Attempts: 94

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Anatomy Quizzes & Trivia

Questions and Answers
  • 1. 
    This is a band of connective tissue that surrounds muscles.
    • A. 

      Tendon

    • B. 

      Ligament

    • C. 

      Endomysium

    • D. 

      Epimysium

    • E. 

      Perimysium

  • 2. 
    When connective tissue extends as a broad flat layer, the tendon is referred to as
    • A. 

      Perimysium

    • B. 

      Deep fascia

    • C. 

      Fascicle

    • D. 

      Aponeurosis

    • E. 

      Endomysium

  • 3. 
    For every nerve that penetrates a skeletal muscle there are general how many arteries and veins?
    • A. 

      One artery and one or two veins

    • B. 

      Two arteries and two veins

    • C. 

      Three arteries and two veins

    • D. 

      One artery and three veins

    • E. 

      One artery and a varied amount of veins

  • 4. 
    Axon terminal clusters at the ends of neuromuscular junctions are referred to as:
    • A. 

      Myelin bulbs

    • B. 

      Neuromuscular bulbs

    • C. 

      Synaptic end bulbs

    • D. 

      Axon collateral bulbs

    • E. 

      Tubule bulbs

  • 5. 
    After the fusion of myoblasts, the muscle fiber loses its ability to do what?
    • A. 

      Grow

    • B. 

      Lengthen

    • C. 

      Contract

    • D. 

      Go through cell division

    • E. 

      All of the answer choices

  • 6. 
    The sequence that muscle action potentials must go through to excite a muscle cell
    • A. 

      Sarcolemma, axon of neuron, T tubules

    • B. 

      T tubules, sarcolemma, myofilament

    • C. 

      Muscle fiber, axon of neuron, myofibrils

    • D. 

      Axon of neuron, sarcolemma, T tubules

    • E. 

      Myofibrils, myofilaments, mitochondria

  • 7. 
    The mitochondria in muscle fiber are arranged
    • A. 

      Randomly throughout the sarcoplasm.

    • B. 

      In circles around the T-tubules.

    • C. 

      Around the nuclei

    • D. 

      In rows near the contractile muscle proteins.

    • E. 

      Close to the sarcolemma

  • 8. 
    These are the contractile organelles of the muscle fiber.
    • A. 

      Myofibrils

    • B. 

      Myoglobin

    • C. 

      Mitochondria

    • D. 

      Z discs

    • E. 

      M lines

  • 9. 
    This part of the skeletal muscle cell releases calcium when stimulated by the  T tubules.
    • A. 

      Myofibrils

    • B. 

      Mitochondria

    • C. 

      Terminal cisterns of sarcoplasmic reticulum

    • D. 

      T-tubules

    • E. 

      None of the answer choices

  • 10. 
    The sarcoplasmic reticulum is used for storing
    • A. 

      Oxygen

    • B. 

      ATP

    • C. 

      PO43-.

    • D. 

      Na+.

    • E. 

      Ca2+.

  • 11. 
    Which of the following contain thin filaments.
    • A. 

      I band

    • B. 

      A band

    • C. 

      H zone

    • D. 

      Both I band and A band

    • E. 

      All of these answer choices are correct

  • 12. 
    Which of the following contain thick filament?
    • A. 

      Zone of overlap

    • B. 

      A band

    • C. 

      H zone

    • D. 

      Both A band and H zone

    • E. 

      All of the above

  • 13. 
    Myofibrils contain
    • A. 

      Contractile proteins.

    • B. 

      Regulatory proteins.

    • C. 

      Structural proteins.

    • D. 

      All of these answers are correct.

    • E. 

      None of these answers are correct.

  • 14. 
    Which of the following functions as a motor protein in all three types of muscle tissue?
    • A. 

      Actin

    • B. 

      Myosin

    • C. 

      Troponin

    • D. 

      Titin

    • E. 

      Tropomyosin

  • 15. 
    What regulatory proteins can be found on an actin molecule?
    • A. 

      Troponin and titin

    • B. 

      Tropomyosin and troponin

    • C. 

      Myosin and titin

    • D. 

      Titin and tropomyosin

    • E. 

      Tropomyosin and myosin

  • 16. 
    Titin is found in a sarcomere
    • A. 

      The A band only

    • B. 

      The H zone only

    • C. 

      The zone of overlap only

    • D. 

      From M line to Z disc

    • E. 

      The I band only

  • 17. 
    Which of the following is used to reinforce the sarcolemma?
    • A. 

      Troponin

    • B. 

      Tropomyosin

    • C. 

      Myosin

    • D. 

      Actin

    • E. 

      Dystrophin

  • 18. 
    In the sliding filament mechanism, the thin filament is being pulled towards the
    • A. 

      Z disc

    • B. 

      H zone

    • C. 

      M line

    • D. 

      A band

    • E. 

      I band

  • 19. 
    The sarcoplasmic reticulum releases calcium ions into the cytosol
    • A. 

      At the beginning of a contraction

    • B. 

      In response to acetylcholine binding to Ca2+ release channels.

    • C. 

      By active transport using Ca2+ pumps in the SR membrane.

    • D. 

      After the contraction ends.

    • E. 

      All of these answers are correct.

  • 20. 
    What energizes the myosin head?
    • A. 

      The actin filaments

    • B. 

      Calcium ions

    • C. 

      Potassium ions

    • D. 

      ATP hydrolysis reaction

    • E. 

      ADP synthesis

  • 21. 
    What is needed for the contraction cycle to continue?
    • A. 

      ATP and acetylcholine (ACh)

    • B. 

      Calcium ions and ATP

    • C. 

      ACh and potassium ions

    • D. 

      Sodium ions and ATP

    • E. 

      Calcium and ACh

  • 22. 
    The signal to excite a muscle cell must cross the neuromuscular junction by the diffusion of acetylcholine across the
    • A. 

      Node of Ranvier

    • B. 

      Synaptic cleft

    • C. 

      Sarcolemma

    • D. 

      Synaptic end bulb

    • E. 

      Transverse tubule

  • 23. 
    Creatine phosphate and ATP together create enough energy for a muscle to contract for
    • A. 

      15 seconds.

    • B. 

      15 minutes.

    • C. 

      1.5 minutes.

    • D. 

      5 seconds.

    • E. 

      One minute.

  • 24. 
    This consists of a somatic motor neuron plus all the skeletal muscle fibers it stimulates.
    • A. 

      Sarcomere

    • B. 

      Motor unit

    • C. 

      Neuromuscular junction

    • D. 

      Muscle unit

    • E. 

      Multi-unit smooth muscle

  • 25. 
    This is a brief contraction of all muscle fibers in a motor unit in response to a single action potential.
    • A. 

      Isometric contraction.

    • B. 

      Isotonic contraction.

    • C. 

      Tetany.

    • D. 

      Refractory period.

    • E. 

      Twitch contraction.

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