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Chapter 7

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  • The striated appearance of skeletal muscle results from

    the transverse tubule pattern.

    the sarcoplasmic reticulum.

    the perimysium arrangement.

    actin and myosin arrangement.

    cisternae placement.

    actin and myosin arrangement.

  • What is the neurotransmitter that is responsible for triggering contraction of muscle fibers?

    acetylcholine (ACh)

    troponin

    dopamine

    acetylcholinesterase

    acetylcholine

  • The term used to describe muscular growth in response to usage is

    muscular dystrophy.

    myopathy.

    multiple sclerosis.

    atrophy.

    hypertrophy.

    hypertrophy

  • Nonstriated, involuntary muscle is

    smooth.

    red skeletal.

    cardiac.

    white skeletal.

    intermediate skeletal.

    Smooth

  • Unlike skeletal tissue, cardiac muscle tissue ________

    is striated, and contains intercalated discs and myoglobin

    is involuntary, and contains branched cells and intercalated discs

    is voluntary, and contains intercalated discs and myoglobin

    is involuntary, is striated, and does not contain myoglobin

    is involuntary, and contains branched cells and intercalated discs

  • What kind of striated muscle tissue is under involuntary control?

    smooth

    cartilage

    cardiac

    sarcolemma

    cardiac

  • What is the name of the bone cell that secretes acids and enzymes that dissolve the bony matrix and release the stored minerals through osteolysis?

    chondrocytes

    osteoclast

    osteoblast

    osteocyte

    osteoclasts

  • What kind of nervous cells provide support to neurons?

    dendrites

    axon

    neuroglia

    fibroblasts

    neuroglia

  • What is the action of the diaphragm?

    Contraction of the diaphragm elevates the ribs.

    Contraction of the diaphragm causes lateral rotation and flexion.

    Contraction of the diaphragm expands thoracic cavity and compresses abdominopelvic cavity.

    Contraction of the diaphragm depresses the ribs.

    Contraction of the diaphragm expands thoracic cavity and compresses abdominopelvic cavity.

  • What is the principle action of the vastus lateralis and the other quadriceps muscles?

    flexion of the knee

    flexion of the hip

    extension of the knee

    extension and lateral rotation at hip

    Extension of the knee