Musculoskeletal System Overview
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Questions and Answers

What is the function of troponin T?

  • Binds to tropomyosin (correct)
  • Provides mechanical support
  • Acts as a shock absorber
  • Inhibits F-actin-myosin interaction

What is the main function of the skeleton?

  • Act as the metabolic reservoir of minerals
  • Facilitate nerve stimulation
  • Trap calcium for muscle contraction
  • Provide protection (correct)

What is the composition of osteoid?

  • Inorganic salts deposited in a matrix
  • Nonmineral matrix of collagen and glycosaminoglycan (correct)
  • Mineral matrix of collagen and glycosaminoglycan
  • Hardened bone material

What stimulates smooth muscle contraction?

<p>Nervous stimulation (B)</p> Signup and view all the answers

In which type of muscle cells are actin and myosin filaments not organized?

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

What is the main function of the skeleton?

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

What is the composition of osteoid?

<p>Nonmineral matrix of collagen and glycosaminoglycan (A)</p> Signup and view all the answers

Which type of bone cells are responsible for bone formation?

<p>Osteogenic cells (B)</p> Signup and view all the answers

In which type of muscle cells are actin and myosin filaments not organized?

<p>Smooth muscle cells (B)</p> Signup and view all the answers

Where are involuntary muscles mainly found?

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

What is the characteristic of voluntary muscles?

<p>Striated and under voluntary control (D)</p> Signup and view all the answers

What is the main function of the Musculoskeletal System?

<p>Support, movement, and stability (A)</p> Signup and view all the answers

Where is cardiac muscle found?

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

What causes the red pigment in muscles?

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

What percentage of the body is made up of skeletal muscle?

<p>40% (B)</p> Signup and view all the answers

What is contained in an elastic sheath called sarcolemma?

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

What protein forms cross bridges with myosin during muscle contraction?

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

What is mainly responsible for force generation in muscles?

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

What does a nerve fiber end in connection with?

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

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