This quiz works best with JavaScript enabled. Home > Cbse > Class 12 > Common Subjects > Physical Education > Class 12 Physical Education Chapter 9 Physiology And Exercise – Quiz 7 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 7 (60 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. During the systole phase of the cardiac cycle, the ventricles ..... A) Contract. B) Relax. C) All the above. D) None of the above. Show Answer Correct Answer: A) Contract. 2. The chamber of the chest is known as the ..... A) Lungs. B) Diaphragm. C) Thoracic cavity. D) Pharynx. Show Answer Correct Answer: C) Thoracic cavity. 3. During which type of muscle contraction does a muscle produce tension while being elongated? A) Isometric. B) Concentric. C) Eccentric. D) Isotonic. Show Answer Correct Answer: C) Eccentric. 4. Which node delays the ventricles from firing before fully filled? A) AV. B) SA. C) All the above. D) None of the above. Show Answer Correct Answer: A) AV. 5. Which of the following is not a factor affecting wound healing mentioned in the text? A) Age. B) Remodeling. C) Diet. D) Disease. Show Answer Correct Answer: C) Diet. 6. Which set of ions are necessary for the nerve impulse conduction? A) Sodium and potassium ions. B) Sodium and calcium ions. C) Calcium and potassium ions. D) Sodium and magnesium ions. Show Answer Correct Answer: A) Sodium and potassium ions. 7. Within the first six days of endurance training, plasma volume increases by approximately: A) 5%. B) 20%. C) 30%. D) 11%. Show Answer Correct Answer: D) 11%. 8. What is the name give to the thin protein filaments within the muscle contractile unit? A) Haemoglobin. B) Actin. C) Myoglobin. D) Myosin. Show Answer Correct Answer: B) Actin. 9. What describes the roles of actin and myosin during contraction? A) Both shorten. B) Both catalyze reactions. C) Actin is disassembled by myosin. D) Cross-bridges form/break to shorten sarcomeres. Show Answer Correct Answer: D) Cross-bridges form/break to shorten sarcomeres. 10. Which contract in unison?? A) Top chambers, then bottom chambers. B) Right Chambers, then the Left Chambers. C) All four chambers beat in unison. D) None of the above. Show Answer Correct Answer: A) Top chambers, then bottom chambers. 11. How many lungs are there in the human body A) 4.0. B) 2.0. C) 1.0. D) 3.0. Show Answer Correct Answer: B) 2.0. 12. Which factor determines the amount of melanin activity in an area? A) The length of melanocyte tentacles and the number of keratinocytes. B) The number of melanocytes. C) Hemoglobin levels. D) The length of melanocyte tentacles only. Show Answer Correct Answer: A) The length of melanocyte tentacles and the number of keratinocytes. 13. How long does the inflammatory phase last? A) One to four days after the injury. B) A month after the injury. C) Years after the injury. D) Two to three weeks after the injury. Show Answer Correct Answer: A) One to four days after the injury. 14. What causes fatigue in a muscle? A) The build up of lactic acid in a muscle due to lack of sufficient oxygen. B) The build up of the bicarbonate ion in a muscle. C) The muscle has an influx of too many potassium ions. D) The muscle becomes "tired". Show Answer Correct Answer: A) The build up of lactic acid in a muscle due to lack of sufficient oxygen. 15. Acetylcholinesterase A) A word that you can use to sound smart. B) One of Este's favorite words. C) Breaks down acetylcholine to stop muscle contraction. D) All of the above. Show Answer Correct Answer: D) All of the above. 16. Rapid heart rate (over 100 bpm) A) Tachycardia. B) Bradycardia. C) All the above. D) None of the above. Show Answer Correct Answer: A) Tachycardia. 17. The chamber in the heart which is responsible for pumping oxygenated blood out the aorta to the body is the ..... A) Right ventricle. B) Right atrium. C) Left atrium. D) Left ventricle. Show Answer Correct Answer: D) Left ventricle. 18. What is the process where gases are exchanged with tissue cells? A) Internal Respiration. B) Respiratory Gas Transport. C) External Respiration. D) Pulmonary Respiration. Show Answer Correct Answer: A) Internal Respiration. 19. Which of these are the correct pathway for air into the lungs? A) Nasal/mouth, Trachea, Bronchioles, Alveoli. B) Nasal/Mouth, Trachea, Bronchi, Bronchioles, Alveoli. C) Nasal/Mouth, Bronchi, Bronchioles, Alveoli. D) Trachea, Bronchi, Bronchioles, Alveoli. Show Answer Correct Answer: B) Nasal/Mouth, Trachea, Bronchi, Bronchioles, Alveoli. 20. Stroke volume will decrease as the exercise intensity increases. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 21. Pathogen presented by MHC Class I molecules A) Influenza virus. B) Ascaris lumbricoides. C) Streptococcus pneumonia. D) Mycobacterium tuberculosis. Show Answer Correct Answer: A) Influenza virus. 22. The flat skull bones are in numbers A) 19.0. B) 21.0. C) 20.0. D) 22.0. Show Answer Correct Answer: D) 22.0. 23. The increase in fatty acid binding proteins with training enhances: A) Protein synthesis. B) Fatty acid transport into muscle. C) Glucose uptake. D) Lactic acid removal. Show Answer Correct Answer: B) Fatty acid transport into muscle. 24. Infection of the lungs where alveoli are flooded with bacteria and WBCs: A) Pleuritis/pleurisy. B) Pulmonary edema. C) Roarers. D) Pneumonia. Show Answer Correct Answer: D) Pneumonia. 25. Which chamber of the heart is responsible for pumping oxygenated blood to the systemic circulation? A) Left ventricle. B) Left atrium. C) Right ventricle. D) Right atrium. Show Answer Correct Answer: A) Left ventricle. 26. Lymph nodes swell because: A) High salt content. B) White blood cells multiply within them. C) Invading pathogens attack them. D) Overexertion such as exercise. Show Answer Correct Answer: B) White blood cells multiply within them. 27. Which is NOT a primary signal for exercise adaptation? A) AMP/ATP ratio. B) Insulin. C) Mechanical stretch. D) Calcium. Show Answer Correct Answer: B) Insulin. 28. Which year in Indian cricket team won the 1st world Cup? A) 2011. B) 1983. C) 1984. D) 1986. Show Answer Correct Answer: B) 1983. 29. Which of the following converts pepsinogen to the active form of pepsin in the stomach? A) HCL. B) Gastrin. C) Mucus. D) Chief cells. Show Answer Correct Answer: A) HCL. 30. What is true about increased mitochondrial volume? A) Mitochondrial volume decreases cytosolic [ADP]. B) Increased lactate and H+ formation. C) Increases PC depletion. D) None of the above. Show Answer Correct Answer: A) Mitochondrial volume decreases cytosolic [ADP]. 31. Increased capillarization in trained muscles results in: A) Slower oxygen diffusion. B) Improved oxygen delivery and waste removal. C) Decreased mitochondrial volume. D) None of the above. Show Answer Correct Answer: B) Improved oxygen delivery and waste removal. 32. A friend of yours is having a panic attack and is hyperventilating. What is the best way to bring that friend back to normal levels in terms of blood pH? A) He can hold his breath. B) He can breath slowly into a bag. C) He can hyperventilate in the open air. D) He can hypoventilate in the open air. Show Answer Correct Answer: B) He can breath slowly into a bag. 33. Endurance training increases stroke volume primarily by: A) Increasing preload. B) Decreasing plasma volume. C) Increasing afterload. D) Decreasing contractility. Show Answer Correct Answer: A) Increasing preload. 34. What are the components of the central nervous system? A) Stomach, Intestines. B) Kidneys, Liver. C) Brain, Spinal Cord. D) Heart, Lungs. Show Answer Correct Answer: C) Brain, Spinal Cord. 35. The lower respiratory tract comprises of A) Pharynx, larynx, lungs. B) Pharynx, larynx, bronchi. C) Larynx, trachea, lungs. D) Trachea, bronchi, lungs. Show Answer Correct Answer: D) Trachea, bronchi, lungs. 36. When your body reaches a pH higher than 8, you would be considered to have acidosis. A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: B) False. 37. A 42-year-old man develops a gastric carcinoma affecting the proximal third of this stomach. He is scheduled for a partial gastrectomy of the affected region. Which of the following processes will be most affected by surgery? A) Peristalsis. B) Segmentation. C) Receptive relaxation. D) Retropulsion. Show Answer Correct Answer: C) Receptive relaxation. 38. What does Henry's Law tell us? A) You can multiply the partial pressures to get the total pressure. B) Gasses dissolves in liquids in proportion to partial pressure. C) You can add up the partial pressures to get the total pressure. D) Gasses dissolves in solids in proportion to partial pressure. Show Answer Correct Answer: B) Gasses dissolves in liquids in proportion to partial pressure. 39. What role do Z discs play in sarcomeres? A) Attach myosin. B) Define boundaries and align filaments. C) Store calcium. D) Produce energy. Show Answer Correct Answer: B) Define boundaries and align filaments. 40. Which part of respiratory system is affected by exercise? A) Lungs. B) Wind pipe. C) Bronchi. D) All of the above. Show Answer Correct Answer: D) All of the above. 41. Synthesis of ribosomes are done here A) Mitochondria. B) Lysosome. C) Nucleolus. D) Endoplasmic Reticulum. Show Answer Correct Answer: C) Nucleolus. 42. Which of the following correlate with the sounds of the cardiac cycle heard with a stethoscope? A) The closing of valves. B) The opening of valves. C) Electrical impulse conduction. D) Atrial contraction. Show Answer Correct Answer: A) The closing of valves. 43. 'The volume of air inspired or expired per minute' is referred to as the ..... A) Tidal volume. B) Breathing rate. C) Pulmonary ventilation. D) Residual volume. E) Vital capacity. Show Answer Correct Answer: C) Pulmonary ventilation. 44. An increase in this parameter will decrease blood pressure: A) Afterload. B) Venous return. C) Total peripheral resistance. D) Aldosterone. Show Answer Correct Answer: A) Afterload. 45. Which of the following has the thickest wall A) Right atrium. B) Left ventricle. C) Left atrium. D) Right ventricle. Show Answer Correct Answer: B) Left ventricle. 46. When The bone is broken into many pieces at one place or at different places is called as- A) Compound fracture. B) Green stick fracture. C) Simple fracture. D) Comminuted fracture. Show Answer Correct Answer: D) Comminuted fracture. 47. The point at where a muscle attaches to a bone for movement is called the ..... A) Attachment. B) Agonist. C) Origin. D) Insertion. Show Answer Correct Answer: D) Insertion. 48. Under maximum stress, how much cortisol is produced per day? A) 150 mg. B) 50 mg. C) 250 mg. D) 350 mg. Show Answer Correct Answer: A) 150 mg. 49. The role of a flat bone includes ..... A) Provide a surface area for muscle attachment. B) Protect vital organs. C) Produce red blood cells. D) All of the above. Show Answer Correct Answer: D) All of the above. 50. Transport of D-and L-glucose proceeds at the same rate down an electrochemical gradient by which of the following processes? A) Facilitated diffusion. B) Cotransport. C) Simple diffusion. D) Primary active transport. Show Answer Correct Answer: C) Simple diffusion. 51. What distinguishes Type IIb muscle fibers from Type I muscle fibers? A) Enhanced endurance. B) More myoglobin. C) Greater power output and speed. D) Lower glycogen stores. Show Answer Correct Answer: C) Greater power output and speed. 52. During exercise does the A-V O2 difference increase or decrease? A) Increase. B) Decrease. C) All the above. D) None of the above. Show Answer Correct Answer: A) Increase. 53. Is the air sac which is present around terminal bronchi and where exchange of gases takes place A) Bronchi. B) Bronchus. C) Cilia. D) Alveoli. Show Answer Correct Answer: D) Alveoli. 54. Magnesium is primary reabsorbed in which part of the nephron? A) Proximal convoluted tubule. B) Collecting tubules. C) Loop of Henle. D) Distal convoluted tubule. Show Answer Correct Answer: C) Loop of Henle. 55. The role of the diaphragm during inhalation is ..... A) Contract and moves upwards. B) Contract and move downwards. C) Relax and flatten. D) Relax and move downwards. Show Answer Correct Answer: B) Contract and move downwards. 56. The capacity of muscles to absorb and consume oxygen is called- A) Oxygen transfer. B) Oxygen gain. C) Oxygen uptake. D) Oxygen intake. Show Answer Correct Answer: C) Oxygen uptake. 57. When the diapragm relaxes and moves back up, the lungs are ..... A) Expanding with air. B) Shrinking-pushing air out. C) All the above. D) None of the above. Show Answer Correct Answer: B) Shrinking-pushing air out. 58. A person who exhibits very large muscles has the condition of A) Muscle. B) Atrophy. C) Hypertrophy. D) Muscular dysterophy. Show Answer Correct Answer: C) Hypertrophy. 59. Lymph movement comes from: A) Skeletal muscle and respiratory pump. B) Cardiac and hepatic pump. C) Cranial-sacral pulse. D) Peristalsis. Show Answer Correct Answer: A) Skeletal muscle and respiratory pump. 60. Amount of blood expelled in a single contraction is- A) Pulmonary output. B) Stroke volume. C) Blood pressure. D) Cardiac output. Show Answer Correct Answer: B) Stroke volume. ← PreviousNext →Related QuizzesCommon Subjects QuizzesClass 12 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 8Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 9 🏠 Back to Homepage 📘 Download PDF Books 📕 Premium PDF Books