This quiz works best with JavaScript enabled. Home > Class 12 > Class 12 Physical Education Chapter 9 Physiology And Exercise – Quiz 11 🏠 Homepage 📘 Download PDF Books 📕 Premium PDF Books Class 12 Physical Education Chapter 9 Physiology And Exercise Quiz 11 (25 MCQs) Quiz Instructions Select an option to see the correct answer instantly. 1. Degree of stretch and intracellular calcium affect the force of contraction A) True. B) False. C) All the above. D) None of the above. Show Answer Correct Answer: A) True. 2. When food enters the pharynx, the closes the larynx, so that food does not enter the trachea. A) Pharynx. B) Epiglottis. C) Larynx. D) Windpipe. Show Answer Correct Answer: B) Epiglottis. 3. The brain stem is composed of ..... A) Brain buds and flowers. B) Spinal cord. C) Axon and vertebra. D) Medulla pons and middle brain tissue. Show Answer Correct Answer: D) Medulla pons and middle brain tissue. 4. Sprain is an injury to the- A) Muscles. B) Ligament. C) Bones. D) Tissue. Show Answer Correct Answer: B) Ligament. 5. The hyoid bone is located in the A) Chest region. B) Neck region. C) Head region. D) Stomach region. Show Answer Correct Answer: B) Neck region. 6. Factor that modifies heart rate:Epinephrine and thyroxine speed the HR. (Excess/lack of Ca, Na, and K ions also modify heart activity) A) Neural (ANS) controls. B) Hormones and ions. C) Physical Factors. D) None of the above. Show Answer Correct Answer: B) Hormones and ions. 7. Due to inadequate amounts of gas in the alveoli), resulting in the lungs collapse. A) Atelectasis. B) Acute pulmonary distress syndrome. C) Pulmonary edema. D) Pneumothorax. Show Answer Correct Answer: A) Atelectasis. 8. How are transmissions of nervous impulses from one neuron to the next conducted? A) All neurotransmitters are inhibitory. B) Neurotransmitters cannot be reabsorbed. C) The axon of one neuron touches the dendrite of the next. D) Chemical messages are carried across a space between neurons. Show Answer Correct Answer: D) Chemical messages are carried across a space between neurons. 9. Hemoglobin is present in A) Blood. B) Nucleus of erythrocyte. C) Plasma membrane of RBC. D) Tissues. Show Answer Correct Answer: C) Plasma membrane of RBC. 10. Food is pushed through your ..... and into your stomach with a series of muscle contractions. A) SALIVA. B) NECK. C) MUSCLE FIBER. D) ESOPHAGUS. Show Answer Correct Answer: D) ESOPHAGUS. 11. Which of the following best describes the Frank-Starling law of the heart? A) The heart rate increases with increased venous return. B) The force of contraction increases with increased end-diastolic volume. C) The heart contracts only when stimulated by the nervous system. D) The heart can only pump a fixed volume of blood per beat. Show Answer Correct Answer: B) The force of contraction increases with increased end-diastolic volume. 12. The shaft ( middle part )of a long bone is called A) Epiphysis. B) Metaphysis. C) Diaphysis. D) Cartilage. Show Answer Correct Answer: C) Diaphysis. 13. Define the term 'homeostasis' in relation to human physiology. A) Homeostasis is the fluctuation of body temperature during exercise. B) Homeostasis refers to the process of aging in the human body. C) Homeostasis is the maintenance of a stable internal environment in the human body. D) Homeostasis is the body's ability to grow and develop over time. Show Answer Correct Answer: C) Homeostasis is the maintenance of a stable internal environment in the human body. 14. The part of the respiratory system which carry air from the larynx to the lungs is called A) Pharynx. B) Bronchi. C) Trachea. D) Larynx. Show Answer Correct Answer: C) Trachea. 15. Normal resting myocardial O2 consumption is A) 2.0 mL/100 g/min. B) 3.5 mL/100 g/min. C) 8 mL/100 g/min. D) 15 mL/100 g/min. Show Answer Correct Answer: C) 8 mL/100 g/min. 16. When the diaphragm contracts ..... A) The volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs. B) The volume of the thoracic cavity decreases and the pressure increases causing air to rush out of the lungs. C) All the above. D) None of the above. Show Answer Correct Answer: A) The volume of the thoracic cavity increases and the pressure decreases, causing air to rush into the lungs. 17. When you pull your arm away from a hot object, what part of his body is the effector? A) Brain. B) Muscle. C) Finger. D) Reaction time. Show Answer Correct Answer: B) Muscle. 18. What is the primary benefit of asynchronous motor unit recruitment during prolonged muscle contractions? A) Enhances hypertrophy. B) Maintains consistent force. C) Prevents muscle fatigue. D) Increases flexibility. Show Answer Correct Answer: C) Prevents muscle fatigue. 19. Gas exchange occurs in the lungs between the alveoli and network of tiny blood vessels called A) Artery. B) Veins. C) Capillaries. D) Carina. Show Answer Correct Answer: C) Capillaries. 20. The breakdown of damaged mitochondria is called: A) Apoptosis. B) Mitophagy. C) Glycolysis. D) $\beta$-oxidation. Show Answer Correct Answer: B) Mitophagy. 21. Why are mitochondria so prevalent in skeletal muscle? A) Provide elasticity. B) Repair damage. C) Provide energy for contraction. D) Produce energy anaerobically. Show Answer Correct Answer: C) Provide energy for contraction. 22. Endurance training increases the utilization of: A) Glucose. B) Fat. C) Protein. D) None of the above. Show Answer Correct Answer: B) Fat. 23. Which option below mainly contributes to scar formation? A) Excess collagen and buildup. B) Poor diet and exercise. C) Excess melanocyte activity. D) Redness from inflammation. Show Answer Correct Answer: A) Excess collagen and buildup. 24. Cardiac myocyte contraction begins when calcium ions bind to ..... causing a configurational change. A) Tropomyosin. B) Actin. C) Troponin. D) Myosin. Show Answer Correct Answer: C) Troponin. 25. Time taken to complete one cardiac cycle A) 0.2 sec. B) 0.4 sec. C) 0.6 sec. D) 0.8 sec. Show Answer Correct Answer: D) 0.8 sec. ← 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