In this blog you will find the correct answer of the Coursera quiz Science of Exercise Coursera Week 2 Quiz mixsaver always try to brings best blogs and best coupon codes
 

Week 2 Quiz

 

1. An isometric contraction is one in which there is:

 

  • No change in muscle length with tension development
  • A shortening of muscle with tension development
  • A lengthening of muscle with tension development
  • None of the above

2. What best describes a Type I muscle fiber:

 

  • High in mitochondria, high resistance to fatigue, relies on aerobic energy production
  • Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
  • High in mitochondria, low resistance to fatigue, relies on aerobic energy production
  • High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

3. What best describes a Type IIx muscle fiber:

 

  • High in mitochondria, high resistance to fatigue, relies on aerobic energy production
  • Low in mitochondria, low resistance to fatigue, relies on anaerobic energy production
  • High in mitochondria, low resistance to fatigue, relies on aerobic energy production
  • High in mitochondria, high resistance to fatigue, relies on anaerobic energy production

4. Which best describes muscle fiber type recruitment during a graded-exercise test:

 

  • Type IIx first followed by Type IIa and finally Type I
  • Type IIa first followed by Type IIx and finally Type I
  • Type I first followed by Type IIx and finally Type IIa
  • Type I first followed by Type IIa and finally Type IIx

5. Distance athletes have the greatest percentage of:

 

  • Type IIx muscle fibers
  • Type IIa muscle fibers
  • Type I muscle fibers
  • An equal percentage of all 3 fiber types

6. Which is not a major role of the Respiratory System during exercise:

 

  • Maintain arterial oxygen levels
  • Eliminate carbon dioxide
  • Assist with buffering of metabolic acids
  • Maintain cardiac output

7. The optimal and most efficient way to increase ventilation during exercise is to:

 

  • Increase tidal volume more than breathing frequency
  • Increase breathing frequency more than tidal volume
  • Increase tidal volume and breathing frequency equally

8. Which is not a major role of the Cardiovascular System during exercise:

 

  • Shunt blood flow from viscera
  • Muscle glycogenolysis
  • Increase local muscle blood flow
  • Increase cardiac output

9. Heart rate increases during exercise as a result of:

 

  • An increase in parasympathetic and sympathetic nerve activity
  • A decrease in parasympathetic nerve activity and an increase in sympathetic nerve activity
  • A decrease in parasympathetic and sympathetic nerve activity
  • A decrease in circulating epinephrine

10. What is the Fick equation:

 

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11. Which is not a way to increase blood flow to active muscles:

 

  • Increase cardiac output
  • Vasodilation of blood vessels in active muscles
  • Vasoconstriction of blood vessels in the viscera
  • An increase in ventilation

12. Which is true regarding insulin:

 

  • It promotes glucose uptake by both muscle and liver
  • It promotes fat mobilization from adipose tissue
  • It promotes glycogen breakdown in muscle
  • It promotes glycogen breakdown in liver

13. Which is true regarding glucagon:

 

  • It promotes glucose uptake by both muscle and liver
  • It promotes fat synthesis in adipose tissue
  • It promotes glycogen breakdown in muscle
  • It promotes glycogen breakdown in liver

14. Which is not a role for epinephrine during exercise:

 

  • Increase heart rate
  • Increase stroke volume
  • Increase glycogen breakdown in muscle
  • Increase fat mobilization from adipose tissue
  • None of the above

15. Which is true regarding exercise and the immune system:

 

  • An intense bout of exercise will transiently enhance immune function
  • An intense bout of exercise will transiently suppress immune function
  • A moderate bout of exercise will transiently enhance immune function
  • A moderate bout of exercise will transiently suppress immune function

 

 

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