This quiz works best with JavaScript enabled. Home > Class 11 > Class 11 Physical Education Chapter 5 Physiology And Exercise – Quiz 17 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 17 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. What is the primary effect of sympathetic nervous system activation on the heart? A) It increases heart rate and contractility. B) It has no effect on the heart. C) It decreases blood flow to the heart. D) It decreases heart rate and contractility. Show Answer Correct Answer: A) It increases heart rate and contractility. 2. What happens to force production as motor unit firing frequency increases? A) It decreases. B) It remains constant. C) It increases (Summation). D) It fluctuates randomly. Show Answer Correct Answer: C) It increases (Summation). 3. Which energy system is primarily used during short, explosive activities like a 100m sprint? A) Aerobic glycolysis. B) Oxidative phosphorylation. C) ATP-PCr. D) Glycolytic. Show Answer Correct Answer: C) ATP-PCr. 4. Which characteristic is most associated with Type I muscle fibers? A) High glycolytic capacity. B) High oxidative capacity. C) High peak power. D) Low myoglobin levels. Show Answer Correct Answer: B) High oxidative capacity. 5. T/F. Exercise training increases SSHR (steady-state HR) for a given submaximal workload. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 6. How does performing a warm-up before exercise contribute to minimizing the oxygen deficit during the activity? A) It increases the body's core temperature, reducing the need for oxygen. B) It delays the onset of fatigue, allowing for longer anaerobic activity. C) It increases oxygen delivery to the muscles, reducing the initial oxygen demand. D) It converts lactic acid into usable energy before exercise begins. Show Answer Correct Answer: C) It increases oxygen delivery to the muscles, reducing the initial oxygen demand. 7. Which fiber type possesses the highest mitochondrial density? A) Type IIx. B) Type IIa. C) Type I. D) Type IIb. Show Answer Correct Answer: C) Type I. 8. Type I fiber is? A) Glycolytic. B) Oxidative. C) Intermediary. D) None of the above. Show Answer Correct Answer: B) Oxidative. 9. During high-intensity exercise, what is the primary immediate buffer of ATP concentration in skeletal muscle? A) Hepatic gluconeogenesis. B) Anaerobic glycolysis via lactate dehydrogenase. C) Mitochondrial oxidative phosphorylation. D) Phosphocreatine via the creatine kinase reaction. Show Answer Correct Answer: D) Phosphocreatine via the creatine kinase reaction. 10. This type of training is the brief repeated bouts of high-intensity exercise with intermittent recovery periods to elicit cardiopulmonary, metabolic, and neuromuscular adaptations. A) Interval Training. B) High Intensity Interval Training. C) Combination Training. D) None of the above. Show Answer Correct Answer: B) High Intensity Interval Training. 11. Load relaxation refers to: A) A reduction in ultimate tensile strength. B) Increasing strain over time under constant stress. C) Decreasing stress over time under constant strain. D) Increasing stiffness with repeated loading. Show Answer Correct Answer: C) Decreasing stress over time under constant strain. 12. Which training cycle refers to weekly variations in volume and intensity? A) Mesocycle. B) Microcycle. C) Macrocycle. D) Periodization. Show Answer Correct Answer: B) Microcycle. 13. Which chemicals must be present for muscles to contract? A) Calcium. B) ATP. C) Lactic acid. D) ATP and Calcuim. Show Answer Correct Answer: D) ATP and Calcuim. 14. Which of the following is a characteristic of aerobic training? A) Intermittent bouts of exercise. B) Explosive movements. C) Sustained rhythmic movement. D) High-intensity, short duration. Show Answer Correct Answer: C) Sustained rhythmic movement. 15. Which Korotkoff sound is used to determine systolic blood pressure? A) Phase I. B) Phase II. C) Phase IV. D) Phase V. Show Answer Correct Answer: A) Phase I. 16. What is the primary role of chemoreceptors during exercise? A) To monitor blood glucose levels. B) To monitor levels of oxygen, carbon dioxide, and pH in the blood. C) To regulate body temperature. D) To control muscle contractions. Show Answer Correct Answer: B) To monitor levels of oxygen, carbon dioxide, and pH in the blood. 17. What is renin? A) Stimulates lipolysis via lipase. B) Promotes renal reabsorption of sodium, causing the body to retain sodium. C) Initiates the renin-angiotensin-aldosterone mechanism to help maintain plasma volume and blood pressure. D) None of the above. Show Answer Correct Answer: C) Initiates the renin-angiotensin-aldosterone mechanism to help maintain plasma volume and blood pressure. 18. Which energy system dominates during a 400m sprint (~45-60 seconds)? A) ATP-PCr. B) Glycolytic. C) Oxidative. D) Aerobic. Show Answer Correct Answer: B) Glycolytic. 19. What does F.I.T.T stand for? A) Frequency Intensity Time Type. B) Fast Intermittent Training Types. C) Frequency Intensity Training Types. D) Fast Intense Training Time. Show Answer Correct Answer: A) Frequency Intensity Time Type. 20. Diastolic blood pressure during endurance exercise usually: A) Increases sharply. B) Decreases slightly or stays constant. C) Matches systolic pressure. D) Drops to critically low levels. Show Answer Correct Answer: B) Decreases slightly or stays constant. 21. If breathing doesn't increase it wont bring enough O2 and will build up CO2 causing a change in A) Alkaline. B) Blood volume. C) Lower breathing rate. D) Acidic blood pH. Show Answer Correct Answer: D) Acidic blood pH. 22. Which of the following, when depleted or reduced in amount, will significantly limit exercise performance? A) Amino acids. B) Glucose. C) Lactate. D) Glycogen. Show Answer Correct Answer: D) Glycogen. 23. (L7) Which macronutrient provides the body with quick energy? A) Proteins. B) Fats. C) Carbohydrates. D) Vitamins. Show Answer Correct Answer: C) Carbohydrates. 24. Group of repetition followed by a rest period. A) Interval. B) Set. C) Repetition. D) None of the above. Show Answer Correct Answer: B) Set. 25. What type of muscle is attached to the skeleton and is under voluntary control? A) Cardiac muscle. B) Smooth muscle. C) Skeletal muscle. D) Striated muscle. Show Answer Correct Answer: C) Skeletal muscle. ← PreviousNext →Related QuizzesClass 11 Physical Education Chapter 5 Physiology And Exercise Quiz 1Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 2Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 3Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 4Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 5Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 6Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 7Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 8Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 9Class 11 Physical Education Chapter 5 Physiology And Exercise Quiz 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books