Muscle Tissue Key Objectives Quiz

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Questions and Answers

Which type of muscle appears striated and has long, cylindrical, multinucleated fibers?

  • Cardiac muscle
  • Smooth muscle
  • Skeletal muscle (correct)
  • None of the above

What is the microscopic appearance of smooth muscle?

  • Striated
  • Spindle-shaped (correct)
  • Branched
  • None of the above

Which muscle type has cells connected by intercalated discs?

  • Skeletal muscle
  • Smooth muscle
  • Cardiac muscle (correct)
  • None of the above

What are the key characteristics of skeletal muscle?

<p>Voluntary control, striated appearance, multinucleated cells (B)</p> Signup and view all the answers

What are the components of sarcomeres in skeletal and cardiac muscle?

<p>Z-lines, A-bands, I-bands, H-zone, and M-lines (A)</p> Signup and view all the answers

What initiates the contraction in skeletal muscle?

<p>A neural signal, calcium release from the sarcoplasmic reticulum, binding of calcium to troponin, cross-bridge formation between actin and myosin, and sliding of filaments (B)</p> Signup and view all the answers

What initiates the contraction in smooth muscle?

<p>Calcium entry through channels, calcium binding to calmodulin, activation of myosin light chain kinase, and phosphorylation of myosin (A)</p> Signup and view all the answers

What disrupts the neuromuscular junction?

<p>Neuromuscular diseases, nerve damage, or certain toxins like botulinum toxin (A)</p> Signup and view all the answers

What is the microscopic appearance of cardiac muscle?

<p>Branched (C)</p> Signup and view all the answers

What are the key characteristics of smooth muscle?

<p>Involuntary control, non-striated appearance, spindle-shaped cells (A)</p> Signup and view all the answers

Which muscle type has shorter and branched cells with single or binucleated cells?

<p>Cardiac Muscle (B)</p> Signup and view all the answers

What is the microscopic appearance of smooth muscle?

<p>Non-striated (B)</p> Signup and view all the answers

Which muscle type has intercalated discs?

<p>Cardiac Muscle (B)</p> Signup and view all the answers

What initiates the contraction in cardiac muscle?

<p>Pacemaker signal (C)</p> Signup and view all the answers

Which muscle type has spindle-shaped cells?

<p>Smooth Muscle (C)</p> Signup and view all the answers

What are the components of sarcomeres in smooth muscle?

<p>Dense bodies (A)</p> Signup and view all the answers

What initiates the contraction in skeletal muscle?

<p>A neural signal (D)</p> Signup and view all the answers

Which muscle type appears striated and has long, cylindrical, multinucleated fibers?

<p>Skeletal Muscle (A)</p> Signup and view all the answers

What is the microscopic appearance of cardiac muscle?

<p>Striated (A)</p> Signup and view all the answers

What disrupts the neuromuscular junction?

<p>All of the above (D)</p> Signup and view all the answers

Which muscle type has cells connected by intercalated discs?

<p>Cardiac Muscle (B)</p> Signup and view all the answers

What is the microscopic appearance of smooth muscle?

<p>Non-striated (B)</p> Signup and view all the answers

What disrupts the neuromuscular junction?

<p>All of the above (D)</p> Signup and view all the answers

What are the key characteristics of smooth muscle?

<p>Involuntary control, non-striated appearance, spindle-shaped cells (A)</p> Signup and view all the answers

Which muscle type appears striated and has long, cylindrical, multinucleated fibers?

<p>Skeletal Muscle (A)</p> Signup and view all the answers

What are the components of sarcomeres in smooth muscle?

<p>Dense bodies (B)</p> Signup and view all the answers

What initiates the contraction in skeletal muscle?

<p>A neural signal (A)</p> Signup and view all the answers

Which muscle type has shorter and branched cells with single or binucleated cells?

<p>Cardiac Muscle (B)</p> Signup and view all the answers

What is the microscopic appearance of smooth muscle?

<p>Non-striated (A)</p> Signup and view all the answers

What are the components of sarcomeres in skeletal and cardiac muscle?

<p>Z-lines, A-bands, I-bands, H-zone, and M-lines (A)</p> Signup and view all the answers

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