Human Anatomy: Bones, Muscles, and Tissues
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Questions and Answers

What is the function of smooth muscles in the respiratory system?

  • Peristalsis
  • Composes the heart
  • Maintain pressure in arteries
  • Change thoracic volume (correct)

Which body system is responsible for maintaining pressure in arteries?

  • Muscular system (correct)
  • Digestive system
  • Nervous system
  • Skeletal system

What is the function of skeletal muscles?

  • Composes the heart
  • Perform peristalsis
  • Change thoracic volume
  • Body movement (correct)

Where can cardiac muscles primarily be found in the body?

<p>In the heart (B)</p> Signup and view all the answers

What is the function of tendons in the body?

<p>Connect muscle to bone (D)</p> Signup and view all the answers

What is the role of calcium in muscle contraction?

<p>Opens attachment sites of actin for myosin binding (A)</p> Signup and view all the answers

Which component defines the boundary between sarcomeres?

<p>Z bands (B)</p> Signup and view all the answers

What causes muscle fatigue?

<p>Buildup of lactic acid lowering cell pH (A)</p> Signup and view all the answers

How do steroids impact muscle cells?

<p>Increase protein filament synthesis for muscle strength (B)</p> Signup and view all the answers

What is the alternative energy source for muscle contraction other than ATP?

<p>Creatine phosphate (B)</p> Signup and view all the answers

What characterizes muscular dystrophy?

<p>Hereditary progressive wasting of muscles (D)</p> Signup and view all the answers

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