Musculoskeletal System and Types of Muscles
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Questions and Answers

What is the function of troponin T?

  • Inhibits F-actin-myosin interaction
  • Binds to tropomyosin (correct)
  • Activates smooth muscle cells
  • Promotes bone formation

Which type of muscle contains troponin?

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

What is the function of troponin I?

  • Activates smooth muscle cells
  • Inhibits F-actin-myosin interaction (correct)
  • Binds to tropomyosin
  • Promotes bone formation

From where is the calcium derived for smooth muscle contraction?

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

What is the role of troponin C in muscle contraction?

<p>Binds calcium for regulation (D)</p> Signup and view all the answers

What do osteoblasts secrete during bone formation?

<p>Collagen components of non-mineralized bone (B)</p> Signup and view all the answers

Where are involuntary muscles mainly found?

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

Which type of muscle is sometimes called skeletal muscle?

<p>Voluntary muscle (D)</p> Signup and view all the answers

What is the main function of the Musculoskeletal System?

<p>Movement, stability, shape, and support (C)</p> Signup and view all the answers

What is responsible for force generation in muscle contraction?

<p>Myosin thick filament (C)</p> Signup and view all the answers

What is the distribution of different types of muscle tissue in the body?

<p>Skeletal muscle - 40%, Smooth and cardiac muscle -10% (B)</p> Signup and view all the answers

What substance in muscle increases with age and use?

<p>Myoglobin (D)</p> Signup and view all the answers

What makes up a muscle fiber?

<p>A group of fibrils (B)</p> Signup and view all the answers

Where is cardiac muscle found?

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

What is contained in an elastic sheath of its own called the sarcolemma?

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

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