This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physical Education Chapter 9 Physiology And Exercise – Quiz 24 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 24 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Which chemical is used to allow muscles to contract? A) Calcium. B) ATP. C) Lactic acid. D) ATP and Calcuim. Show Answer Correct Answer: B) ATP. 2. What is the role of glucagon during fasting? A) Increases blood glucose levels. B) Promotes fat storage. C) Decreases glucose production. D) Stimulates insulin secretion. Show Answer Correct Answer: A) Increases blood glucose levels. 3. This is the result of an decrease of negative charge within the cell; thus, making it more positive. A) Depolarization. B) Hyperpolarization. C) Resting membrane potential. D) Repolarization. Show Answer Correct Answer: A) Depolarization. 4. During ..... , the diaphragm relaxes and raises up, reducing thoracic cavity volume and air leaves the body. A) Inspiration. B) Inhalation. C) Ventilation. D) Expiration. Show Answer Correct Answer: D) Expiration. 5. What is the normal pH of our blood? A) 5.6. B) 9.3. C) 7.4. D) 3.2. Show Answer Correct Answer: C) 7.4. 6. Where in the heart could I find the SA Node? A) Right Atrium. B) Left Atrium. C) Right Ventricle. D) Left Ventricle. Show Answer Correct Answer: A) Right Atrium. 7. Why does the partial pressure of Oxygen change from the pulmonary artery (100mmHG) to the pulmonary vein (40mmHG)? A) Oxygen is lost on the way to the capillaries. B) Oxygen is gained on the way to the capillaries. C) Oxygen is lost in the capillaries. D) Oxygen is gained in the capillaries. E) CO2 pickup in the capillaries causes the change in pressure. Show Answer Correct Answer: C) Oxygen is lost in the capillaries. 8. If someone is eating plenty of starch and their cells have glucose molecules, what other reason could they feel so tired? A) They might not be getting enough oxygen molecules. B) They might not be getting enough exercise. C) They might not be drinking enough water. D) They might not be stretching when they get up in the morning. Show Answer Correct Answer: A) They might not be getting enough oxygen molecules. 9. This is responsible for the production of myelin sheath in the CNS: A) Oligodendrocytes. B) Schwann cells. C) Microglia. D) Astrocytes. Show Answer Correct Answer: A) Oligodendrocytes. 10. T/F:Heart murmurs are indicative of the valves of the heart not functioning properly: A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 11. Contractility is the same as contractile force. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 12. Overstretching of ligament causes ..... A) Strain. B) Sprain. C) Contusion. D) Bruises. Show Answer Correct Answer: B) Sprain. 13. The soft tissue present in the hollow space of the shaft is called A) Boney cartilage. B) Boney plate. C) Bone marrow. D) Boney line. Show Answer Correct Answer: C) Bone marrow. 14. A new mother calls the pediatrician because she is concerned that her infant defecates after every meal. Which of the following is the cause of normal bowel movements in newborns? A) Defecation reflex. B) Gastrocolic reflex. C) Gastro-ileal reflex. D) Intestino-intestinal reflex. Show Answer Correct Answer: B) Gastrocolic reflex. 15. Saliva is important in lubrication, protection and even digestion of some carbohydrates. High flow rate of salivary secretion will have the following content EXCEPT? A) Low sodium. B) Low potassium. C) Isotonic. D) Lingual lipase. Show Answer Correct Answer: A) Low sodium. 16. Where does the process of muscle contraction begin? A) In the heart. B) In the neuromuscular junction. C) In the blood vessels. D) In the skeletal system. Show Answer Correct Answer: B) In the neuromuscular junction. 17. Where are your interneurons located? A) Brain. B) Muscle. C) Finger. D) Reaction time. Show Answer Correct Answer: A) Brain. 18. A molecule that organisms get from the air or water around them and use to release energy A) Proteins. B) Glucose. C) Amino acids. D) Oxygen. Show Answer Correct Answer: D) Oxygen. 19. Range of movements of any muscle or joint is called as? A) Strength. B) Flexibility. C) Speed. D) Endurance. Show Answer Correct Answer: B) Flexibility. 20. The nodal system is A) The controlling system for voluntary cardiac muscle constriction. B) The unifying control system for the heart beats. C) The control system for vasodilation of blood vessels. D) None of the above. Show Answer Correct Answer: B) The unifying control system for the heart beats. 21. Which of the following is a consequence of insulin deficiency? A) Decreased fat breakdown. B) Increased blood glucose levels. C) Increased protein synthesis. D) Increased glucose uptake. Show Answer Correct Answer: B) Increased blood glucose levels. 22. Which of the following is responsible for sleep cycle movements? A) Melatonin. B) Dopamine. C) Serotin. D) Adrenaline. Show Answer Correct Answer: A) Melatonin. 23. What is the role of T-tubules in muscle contraction? A) Transport acetylcholine. B) Made of thick/thin filaments. C) Conduct signals to trigger calcium release. D) Return calcium to the SR. Show Answer Correct Answer: C) Conduct signals to trigger calcium release. 24. The main posterior muscle of the torso is the ..... A) Pectorals. B) Latissimus Dorsi. C) Tricep. D) Gluteals. Show Answer Correct Answer: B) Latissimus Dorsi. 25. The joints present in the skull bones are called A) Cartilaginous. B) Sutures. C) Diathesis. D) Amphiarthosis. Show Answer Correct Answer: B) Sutures. ← PreviousNext →Related QuizzesClass 12 Physical Education Chapter 9 Physiology And Exercise Quiz 1Class 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 10 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books