Muscle
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Questions and Answers

Which type of muscle is striated?

  • Skeletal muscle
  • Smooth muscle
  • Cardiac muscle
  • Both skeletal and cardiac muscle (correct)
  • Which muscle type has the largest cell diameter?

  • Skeletal muscle (correct)
  • All muscle types have similar cell diameters
  • Smooth muscle
  • Cardiac muscle
  • Which muscle type is under voluntary control?

  • Both cardiac and smooth muscle
  • Skeletal muscle (correct)
  • Smooth muscle
  • Cardiac muscle
  • Which type of muscle tissue is capable of active regeneration?

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

    Which type of muscle tissue has no regenerative ability?

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

    What are satellite cells?

    <p>Inactive myoblasts</p> Signup and view all the answers

    Which structure contains only myosin filaments?

    <p>H bands</p> Signup and view all the answers

    What is the function of the sarcoplasmic reticulum in muscle cells?

    <p>To sequester and release calcium ions</p> Signup and view all the answers

    What is the function of dense bodies in smooth muscle?

    <p>To anchor actin-myosin filament bundles</p> Signup and view all the answers

    Where are T-tubules located in cardiac muscle cells?

    <p>At Z lines</p> Signup and view all the answers

    Which type of muscle cells are non-striated?

    <p>Smooth muscle cells</p> Signup and view all the answers

    Which term is used to describe muscle cells that are longer than they are wide?

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

    What is the correct order of the three types of muscle cells, from non-striated to striated?

    <p>Smooth, skeletal, cardiac</p> Signup and view all the answers

    Which type of muscle tissue is located near bones?

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

    Which muscle type is under voluntary control?

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

    Which muscle type has striations?

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

    Which muscle type has the smallest cell diameter?

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

    Which muscle type has peripheral nuclei?

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

    Which connective tissue surrounds each fascicle in skeletal muscle?

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

    What is the function of T tubules in skeletal muscle cells?

    <p>To form triads at the junction of A-I bands</p> Signup and view all the answers

    Which structure contains only myosin filaments?

    <p>M lines</p> Signup and view all the answers

    What is the function of intercalated disks in cardiac muscle cells?

    <p>To allow electrical stimuli to be passed</p> Signup and view all the answers

    Which type of muscle tissue is present in walls of hollow organs and larger blood vessels?

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

    What is the function of the sarcoplasmic reticulum in muscle cells?

    <p>To sequester &amp; release calcium ions</p> Signup and view all the answers

    What is the function of dense bodies in smooth muscle?

    <p>To anchor actin-myosin filament bundles</p> Signup and view all the answers

    What is the function of the sarcoplasmic reticulum in muscle cells?

    <p>To store and release calcium ions</p> Signup and view all the answers

    Which type of muscle cells are striated?

    <p>both cardiac and Skeletal muscle cells</p> Signup and view all the answers

    Which type of muscle cells are fusiform with a single central nucleus?

    <p>Smooth muscle cells</p> Signup and view all the answers

    Where are T-tubules located in cardiac muscle cells?

    <p>On the surface of the cell membrane</p> Signup and view all the answers

    What is the function of dense bodies in smooth muscle?

    <p>To anchor actin filaments</p> Signup and view all the answers

    Which type of muscle tissue has the least abundant blood supply?

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

    Which type of muscle tissue has the ability to undergo limited regeneration?

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

    What are the three types of muscle cells?

    <p>Skeletal, cardiac, and smooth</p> Signup and view all the answers

    Which muscle type is under voluntary control?

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

    Which type of muscle tissue has no regenerative ability?

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

    What are satellite cells?

    <p>Inactive myoblasts</p> Signup and view all the answers

    Where are satellite cells located?

    <p>Scattered throughout cytoplasm</p> Signup and view all the answers

    Which type of muscle tissue is capable of active regeneration?

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

    Which type of muscle cells are striated?

    <p>Skeletal muscle cells</p> Signup and view all the answers

    What happens to cardiac muscle when it dies?

    <p>It forms a scar</p> Signup and view all the answers

    Where are T-tubules located in cardiac muscle cells?

    <p>In cardiac muscle cells</p> Signup and view all the answers

    What is the function of dense bodies in smooth muscle?

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

    Study Notes

    Muscle Types

    • Striated muscle is skeletal muscle.
    • Skeletal muscle has the largest cell diameter.
    • Skeletal muscle is under voluntary control.

    Muscle Tissue

    • Skeletal muscle tissue is capable of active regeneration.
    • Cardiac muscle tissue has no regenerative ability.

    Muscle Cells

    • Satellite cells are a type of stem cell that helps to repair muscle cells.
    • Satellite cells are located near muscle fibers.
    • Fusiform muscle cells are smooth muscle cells with a single central nucleus.
    • Elongated muscle cells are longer than they are wide.

    Muscle Cell Structure

    • The sarcolemma is the structure that contains only myosin filaments.
    • The sarcoplasmic reticulum is a type of smooth endoplasmic reticulum that stores and releases calcium ions in muscle cells.
    • T-tubules are located in the sarcolemma of cardiac muscle cells and help to regulate muscle contraction.
    • Intercalated disks are structures in cardiac muscle cells that allow for the rapid transmission of electrical signals.
    • Dense bodies are structures in smooth muscle cells that help to anchor the thin filaments and regulate muscle contraction.

    Muscle Tissue Locations

    • Skeletal muscle tissue is located near bones.
    • Smooth muscle tissue is present in the walls of hollow organs and larger blood vessels.

    Muscle Characteristics

    • Skeletal muscle has striations and peripheral nuclei.
    • Cardiac muscle has striations and is under involuntary control.
    • Smooth muscle has no striations and has a single central nucleus.

    Muscle Functions

    • T-tubules help to regulate muscle contraction in skeletal muscle cells.
    • The sarcoplasmic reticulum helps to regulate muscle contraction by releasing and storing calcium ions.
    • Dense bodies help to regulate muscle contraction by anchoring thin filaments.
    • Intercalated disks help to allow for the rapid transmission of electrical signals in cardiac muscle cells.

    Muscle Regeneration

    • Skeletal muscle tissue has the ability to undergo active regeneration.
    • Cardiac muscle tissue has no regenerative ability.
    • Smooth muscle tissue has the ability to undergo limited regeneration.

    Muscle Blood Supply

    • Cardiac muscle tissue has the most abundant blood supply.
    • Smooth muscle tissue has the least abundant blood supply.

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    Description

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