Lecture 9: Muscles Naming and Characteristics
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Questions and Answers

How are skeletal muscles named based on the direction of their fibers?

  • Upward, downward, sideways, circular
  • Rectus, oblique, transverse, orbicularis (correct)
  • Circular, parallel, convergent, pennate
  • Long, short, large, small
  • What do muscles classified as 'pennate' have in common?

  • Wide and then narrows
  • Lined up along the long axis
  • Concentric layers
  • Feather-like fiber patterns (correct)
  • What type of muscle classification is based on anatomical regions or landmarks used in the name?

  • Direction classification
  • Size classification
  • Shape classification
  • Location classification (correct)
  • Which term describes a muscle with fiber patterns lined up along the long axis and a central bulge referred to as the 'belly'?

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

    What is the term used to describe muscle naming based on size and shape?

    <p>Shape and size classification</p> Signup and view all the answers

    What is the fixed immovable attachment point of a muscle called?

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

    Which muscle type is characterized by having attachment points that are parallel to the long axis of the muscle?

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

    What movement describes decreasing the joint angle?

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

    Which muscle is a flexor of the elbow joint?

    <p>Biceps brachii</p> Signup and view all the answers

    What is the movable attachment point of a muscle called?

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

    Which type of muscle has attachment points that converge toward a single tendon?

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

    What movement describes moving a body part toward the midline of the body?

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

    What is the shortening of muscle fiber length called?

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

    "Retraction" primarily involves which body part?

    <p>&quot;Move jaw posterior&quot;</p> Signup and view all the answers

    Which term describes decreasing the joint angle?

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

    What is the term for muscles that are named based on anatomical regions of the body or landmarks used in the name?

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

    Which term describes muscles with attachment points that converge toward a single tendon?

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

    What is the term used to describe muscle naming based on size and shape?

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

    Which term describes muscles with fiber patterns lined up along the long axis and a central bulge referred to as the 'belly'?

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

    What type of muscle classification involves feather-like fascicle arrangement, such as unipennate and multipennate?

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

    Which term describes muscles with fiber patterns arranged in concentric layers?

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

    Which term describes turning a body part on its axis?

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

    What is the term for moving a body part away from the midline of the body?

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

    Which muscle type is characterized by having attachment points that converge toward a single tendon?

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

    What is the term used to describe the fixed, immovable attachment point of a muscle?

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

    What type of muscle classification is based on size and shape?

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

    What movement describes decreasing the joint angle?

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

    What movement describes twisting the wrist to face backward?

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

    What is the term for moving a body part toward the midline of the body?

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

    Which term describes lifting a body part superiorly?

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

    What type of muscle has fibers running parallel to the long axis and a central bulge known as the 'belly'?

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

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