Muscle Anatomy: Sarcomere Coloring Flashcards
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Questions and Answers

What are myofilaments?

Composed of both thick and thin filaments.

Where are mitochondria located in muscle fibers?

Dispersed through the muscle fibers.

What is the role of mitochondria in muscles?

Mitochondria supply energy needed for muscle contraction.

What is the sarcoplasmic reticulum?

<p>A network of tubes that run parallel to the myofilaments.</p> Signup and view all the answers

What are transverse tubules?

<p>Run perpendicular to the myofibril and are a major site for coupling excitation and contraction.</p> Signup and view all the answers

What is the sarcolemma?

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

Study Notes

Myofilaments

  • Composed of thick and thin filaments, critical for muscle contraction mechanics.

Mitochondria

  • Positioned throughout muscle fibers, playing a key role in energy production.

Energy Supply

  • Mitochondria are essential for supplying energy necessary for muscle contraction processes.

Sarcoplasmic Reticulum

  • A specialized network of tubes that runs parallel to myofilaments, important for calcium ion storage and release during contraction.

Transverse Tubules

  • These structures run perpendicular to myofibrils, serving as major sites for excitation-contraction coupling and are open to extracellular fluid.

Sarcolemma

  • The plasma membrane of muscle cells, responsible for maintaining the environment of the cell and conducting electrical signals.

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Description

Explore key components of muscle anatomy with these flashcards focused on sarcomeres. Each card highlights essential terms like myofilaments, mitochondria, and sarcoplasmic reticulum, providing definitions and context for their roles in muscle contraction. Perfect for visual learners and those studying muscle physiology.

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