Musculoskeletal Injury Pathoetiology Quiz
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Questions and Answers

What factor drives bone remodeling?

  • High strain
  • Low strain (correct)
  • Vitamin C
  • Vitamin E

What plays a potent role in bone growth and remodeling?

  • Fiber
  • Iron
  • Sodium
  • Protein (correct)

What condition can lead to 25% less bone mass in athletes?

  • Diabetes
  • Obesity
  • Athlete's Amenorrhea (correct)
  • Osteoporosis

What is the main impact of time on bone remodeling?

<p>Resorption is much faster than Deposition (A)</p> Signup and view all the answers

Which of the following external factors is important for affecting the structure and quantity of bone?

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

What type of bone is built for good energy absorption during impacts?

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

What is the main factor that determines the number of muscle fibers in an individual?

<p>Myostatin levels at birth (A)</p> Signup and view all the answers

Which condition is associated with the 'Hercules Gene'?

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

What is the primary cause of muscle mass reduction with age?

<p>Decrease in fiber number (B)</p> Signup and view all the answers

In which age range do weightlifting champions usually experience a strength plateau?

<p>~50s (A)</p> Signup and view all the answers

What type of muscle failure occurs when there is an issue at the bone-tendon junction?

<p>Failure at muscle-tendon junction (B)</p> Signup and view all the answers

What is the primary reason for active muscle to fail at the z-disc level?

<p>Same length failure as passive muscle (C)</p> Signup and view all the answers

How does exercise impact bone density and bone mineral content in growing bone?

<p>Strenuous exercise can increase bone density by 7% and bone mineral content by 11%. (B)</p> Signup and view all the answers

What happens to estrogen levels and ovulation in individuals with inhibited hypothalamus function?

<p>Estrogen levels decrease and ovulation stops. (D)</p> Signup and view all the answers

Why is optimizing bone mass early in life important?

<p>Early optimization helps prevent rapid bone loss later in life. (A)</p> Signup and view all the answers

What impact does long-term moderate/intense training have on bone mineral content?

<p>Continuous activity retains the benefits of moderate/intense training on bone mineral content. (A)</p> Signup and view all the answers

Why is vitamin D important for bone health?

<p>Vitamin D helps store calcium in fat, impacting bone mass. (C)</p> Signup and view all the answers

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