Muscular System: Types of Muscles
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Questions and Answers

What is the defining characteristic of a muscle?

  • Ability to contract (correct)
  • Ability to relax
  • Ability to elongate
  • Ability to expand
  • Which type of muscle is spindle-shaped, smooth, and generally found in two layers?

  • Skeletal muscle
  • Cardiac muscle
  • Voluntary muscle
  • Smooth muscle (correct)
  • Which type of nerve system controls smooth muscles?

  • Parasympathetic and sympathetic nervous system (correct)
  • Central nervous system
  • Peripheral nervous system
  • Somatic nervous system
  • Where are smooth muscles typically found in the body?

    <p>In the wall of internal organs</p> Signup and view all the answers

    What shape do cardiac muscle fibers typically have?

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

    Which type of muscle includes fibers that form the cardiac conducting system?

    <p>Cardiac muscle</p> Signup and view all the answers

    What is the main difference between cardiac muscle and skeletal muscle?

    <p>Whether it is voluntary or involuntary</p> Signup and view all the answers

    How are skeletal muscles different from smooth muscles?

    <p>Skeletal muscles have central nuclei while smooth muscles have multiple nuclei</p> Signup and view all the answers

    What is the main function of skeletal muscles?

    <p>Maintaining posture</p> Signup and view all the answers

    Why are skeletal muscles called 'striated'?

    <p>It refers to the arrangement of muscle fibers showing longitudinal and transverse striations</p> Signup and view all the answers

    Where are skeletal muscles NOT typically found?

    <p>Internal organs like the heart</p> Signup and view all the answers

    What differentiates the origin from the insertion of a skeletal muscle?

    <p>Proximal vs distal attachment points</p> Signup and view all the answers

    What is the type of muscle that provides for a wide range of movements, like the deltoid muscles?

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

    What is the function of the fleshy (belly) part of a muscle?

    <p>Contractile part responsible for muscle movement</p> Signup and view all the answers

    Which of the following connective tissues attaches muscles to bones?

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

    What is the type of muscle that is broad at its origin and tapers to a narrower insertion, exemplified by the pectoralis major muscle?

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

    Myalgia is characterized by:

    <p>Pain in the muscles</p> Signup and view all the answers

    How are the fibers arranged in muscles with oblique fibers?

    <p>Obliquely to the line of pull</p> Signup and view all the answers

    Which type of muscle fiber arrangement resembles half a feather?

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

    Which type of muscle is arranged in a circle and allows closure of the eyes and mouth?

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

    What is the classification of the sternomastoid muscle based on its fiber orientation?

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

    The fixed part of a skeletal muscle is known as the:

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

    Which type of muscle fiber arrangement has muscle fibers that slope from both sides into a central tendon?

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

    Myasthenia gravis is characterized by:

    <p>Weakness of the muscles</p> Signup and view all the answers

    What is the contractile and fleshy part of a skeletal muscle called?

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

    Which muscle type is also known as striated muscles?

    <p>Striated muscles</p> Signup and view all the answers

    Which muscle type attaches to the bone using a fibrous cord?

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

    In which muscle attachment pattern do fibers attach to both sides of a tendon?

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

    Which muscle type is an example of the convergent type of muscles?

    <p>Pectoralis major</p> Signup and view all the answers

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