This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physical Education Chapter 9 Physiology And Exercise – Quiz 1 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 1 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. The amount of oxygen which can be absorbed and consumed by the working muscle from blood is called ..... A) Oxygen intake. B) Oxygen transport. C) Oxygen uptake. D) Energy reserve. Show Answer Correct Answer: C) Oxygen uptake. 2. The heart sounds "lub" and "dup" result from ..... A) Opening of the heart valves. B) Firing of the nodes of the intrinsic conduction system. C) Blood rushing through the chambers. D) Closure of heart valves. Show Answer Correct Answer: D) Closure of heart valves. 3. In which fracture do the bones get bent? A) Green stick fracture. B) Transverse fracture. C) Comminuted fracture. D) Impacted fracture. Show Answer Correct Answer: A) Green stick fracture. 4. Which one of the following represents the correct path for the transmission of an impulse in the intrinsic conduction system of the heart? A) AV node, Bundle of His, SA node, Purkinje fibers, bundle branches. B) SA node, AV node, Bundle of His, bundle branches, Purkinje fibers. C) SA node, Bundle of His, AV node, Purkinje fibers, bundle branches. D) SA node, Bundle of His, bundle branches, Purkinje fibers, AV node. Show Answer Correct Answer: B) SA node, AV node, Bundle of His, bundle branches, Purkinje fibers. 5. Training improves oxygen delivery by: A) Increasing capillary density. B) Decreasing venous return. C) Decreasing plasma volume. D) Decreasing stroke volume. Show Answer Correct Answer: A) Increasing capillary density. 6. Reflex arc consists of ..... A) Motor nerve. B) Sensory nerve. C) Both motor and sensory nerve. D) Mixed nerve. Show Answer Correct Answer: C) Both motor and sensory nerve. 7. A 92-year-old man presents with dehydration following 4 days of persistent diarrhea. Under circumstance, hypotonic fluid would be expected in which of the following? A) PCT. B) Descending Loop. C) Ascending Loop. D) Cortical Collecting Tubule. Show Answer Correct Answer: C) Ascending Loop. 8. A freediver wants to hold his breath longer when diving to the depths of the ocean. What could he do before going underwater to increase the length of time he can stay underwater? A) He can breath slowly into a bag before going under. B) He can hypoventilate before going under. C) He can hyperventilate before going under. D) He can hyperventilate into the bag before going under. E) He stretch, warm-up, and get his heart rate up before diving. Show Answer Correct Answer: C) He can hyperventilate before going under. 9. When air pressure inside the lungs is less than air pressure in the atmosphere ..... A) Air moves into the lungs. B) Air moves out of the lungs. C) All the above. D) None of the above. Show Answer Correct Answer: A) Air moves into the lungs. 10. Cardiac Output (CO) formula.**HR= heart rate & SV= Stroke Volume** A) SV = CO x HR. B) CO = HR / SV. C) CO = SV / HR. D) CO = HR x SV. Show Answer Correct Answer: D) CO = HR x SV. 11. What is the main stimulus for glucagon release? A) High blood glucose. B) Low blood glucose. C) High insulin levels. D) High amino acid levels. Show Answer Correct Answer: B) Low blood glucose. 12. More the white fibres in the muscles, less is the speed. A) TRUE. B) FALSE. C) All the above. D) None of the above. Show Answer Correct Answer: B) FALSE. 13. What is the main determinant of blood flow through a vessel, according to Poiseuille's law? A) Vessel length. B) Blood viscosity. C) Vessel radius. D) Blood pressure. Show Answer Correct Answer: C) Vessel radius. 14. Which of the following hormones has little effect on the nervous system? A) Glucagon. B) Insulin. C) Somatostatin. D) Pancreatic polypeptide. Show Answer Correct Answer: B) Insulin. 15. Which of the following steps occurs first? A) Myosin heads attach to actin. B) Myosin heads pivot pulling the actin filament toward the center. C) Cross-bridges detach from actin when a new ATP binds to myosin. D) Another cross-bridge forms. Show Answer Correct Answer: A) Myosin heads attach to actin. 16. How many cells human body normally has? A) 30 to 55 trillion. B) 55 billion. C) 10-15 trillion. D) 80-100 million. Show Answer Correct Answer: A) 30 to 55 trillion. 17. Found in heart A) Smooth. B) Cardiac. C) Skeletal. D) None of the above. Show Answer Correct Answer: B) Cardiac. 18. MRNA levels in muscle typically peak after exercise within: A) 1-2 hours. B) 4-8 hours. C) 12-16 hours. D) 24-48 hours. Show Answer Correct Answer: B) 4-8 hours. 19. Cardiac muscle is voluntary or involuntary control? A) Voluntary. B) Involuntary. C) All the above. D) None of the above. Show Answer Correct Answer: B) Involuntary. 20. A group of atoms joined together in a particular way A) Molecule. B) System. C) Cell. D) Metabolism. Show Answer Correct Answer: A) Molecule. 21. Muscle strength comes from A) Muscle size. B) Low body weight. C) Less flexibility. D) Height of the body. Show Answer Correct Answer: A) Muscle size. 22. What is the equation for cellular respiration? A) Glucose + Carbon Dioxide = Energy + Oxygen. B) Glucose + Oxygen = Carbon Dioxide + Water + Energy. C) Carbon Dioxide+ Water= energy + glucose + oxygen. D) Oxygen + Glucose = Sunlight + Carbon dioxide. Show Answer Correct Answer: B) Glucose + Oxygen = Carbon Dioxide + Water + Energy. 23. What equipment is used to measure air being inspired and expired? A) Spirometre. B) Spirometer. C) Inspirometer. D) Expirometer. Show Answer Correct Answer: B) Spirometer. 24. What is the function of hemoglobin? A) To carry iron. B) To carry wastes. C) To carry oxygen. D) To produce oxygen. Show Answer Correct Answer: C) To carry oxygen. 25. Which is NOT the one of the major (99%) contents of our body A) Sodium. B) Oxygen. C) Carbon. D) Hydrogen. Show Answer Correct Answer: A) Sodium. Next →Related QuizzesClass 12 Physical Education Chapter 9 Physiology And Exercise Quiz 2Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 3Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 4Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 5Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 6Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 7Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 8Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 9Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 10Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 11 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books