Anatomy of Skeletal Muscle Flashcards
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Questions and Answers

What is the definition of Perimysium?

  • Connective tissue ensheathing the entire muscle
  • Contractile unit of the muscle
  • A muscle cell
  • Connective tissue surrounding a fascicle (correct)
  • What is the definition of Epimysium?

  • Connective tissue ensheathing the entire muscle (correct)
  • Connective tissue surrounding a fascicle
  • Thin connective tissue investing each muscle cell
  • Cordlike extension of connective tissue beyond the muscle
  • What is the definition of Sarcomere?

  • Actin- or myosin-containing structure
  • Contractile unit of the muscle (correct)
  • Connective tissue surrounding a fascicle
  • A discrete bundle of muscle cells
  • What is the definition of Fiber?

    <p>A muscle cell</p> Signup and view all the answers

    What is the definition of Endomysium?

    <p>Thin connective tissue investing each muscle cell</p> Signup and view all the answers

    What is the definition of Sarcolemma?

    <p>Plasma membrane of the muscle cell</p> Signup and view all the answers

    What is the definition of Myofibril?

    <p>Actin- or myosin-containing structure</p> Signup and view all the answers

    What is the definition of Tendon?

    <p>Cordlike extension of connective tissue beyond the muscle, serving to attach it to the bone</p> Signup and view all the answers

    What is the definition of Fascicle?

    <p>A discrete bundle of muscle cells</p> Signup and view all the answers

    Study Notes

    Connective Tissues in Skeletal Muscle

    • Perimysium: Connective tissue that surrounds a group of muscle fibers known as a fascicle, providing support and pathway for nerves and blood vessels.
    • Epimysium: The outer layer of connective tissue encasing the entire muscle, offering structural integrity and protection.
    • Endomysium: Delicate layer of connective tissue that surrounds and supports individual muscle fibers, ensuring proper nutrient transfer and mechanical stability.

    Muscle Cell Structure

    • Fiber: A term used to refer to a single muscle cell; essential for muscle contraction and responsible for force generation.
    • Myofibril: A long, cylindrical structure within a muscle fiber containing the contractile proteins actin and myosin, integral for muscle contraction.

    Functional Units of Muscle

    • Sarcomere: The smallest functional unit of a muscle, defined by the segment between two Z lines; responsible for muscle contraction through the sliding filament mechanism.

    Muscle Cell Components

    • Sarcolemma: The plasma membrane surrounding a muscle cell, crucial for transmitting electrical impulses that initiate contraction.
    • Fascicle: A discrete bundle of muscle fibers that organizes muscle structure and facilitates coordinated contraction.

    Muscle Attachments

    • Tendon: A fibrous connective tissue that extends from the muscle, anchoring it to the bone, facilitating movement through force transmission.

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    Test your knowledge of the anatomy of skeletal muscle with these flashcards. Each card features a term related to muscle structure along with its definition. Perfect for students studying anatomy or related fields.

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