Exercise Physiology Practice Questions PDF

1.​ An increase in parasympathetic outflow to the heart results in. a.​ A decrease in HR b.​ An increase in HR c.​ A slight decrease in arterial blood pressure followed by an increase in HR d.​ A slight increase in arterial blood pre...

1.​ An increase in parasympathetic outflow to the heart results in. a.​ A decrease in HR b.​ An increase in HR c.​ A slight decrease in arterial blood pressure followed by an increase in HR d.​ A slight increase in arterial blood pressure 2.​ The contraction phase of the heart is called. a.​ Diastole b.​ Repolarization c.​ Systole d.​ None of the above are correct 3.​ In relation to work rate, which of the following does not have a linear response to graded exercise in most people? a.​ Cardiac output b.​ Heart rate c.​ Stroke volume d.​ VO₂ 4.​ Which of the following serves as an “electrical connection(s)” between the 5.​ Which of the following normally determines heart rate? a.​ Bundle of His b.​ Sinoatrial node c.​ AV node d.​ Purkinje fibers 6.​ Which of the following will not increase stroke volume? a.​ Increased preload b.​ Increased end-diastolic volume c.​ Increased afterload d.​ Increased venous return 7.​ All gas exchange between the vascular system and tissues occur at the. a.​ Arterioles b.​ Venules c.​ Capillaries d.​ Veins 8.​ Which of the following has the largest effect (either positive or negative) on blood flow to a specific time area? a.​ vicinity of blood b.​ length of the blood vessel c.​ radius of the blood vessel d.​ pressure gradient 9.​ Blood travels from the lungs to the left side of the heart through the. a.​ Aorta b.​ Pulmonary artery c.​ Pulmonary vein d.​ Vena cava 10.How are myocardial cells different from skeletal muscle fibers? a.​ They are branched b.​ They can spread depolarization from one cell to another c.​ Both A and B are correct d.​ Neither A or B are correct 11.Most of the increase in mean arterial pressure that occurs during grad__ is due to. a.​ An increase in systolic blood pressure b.​ An increase in diastolic blood pressure c.​ Near-equal increase in diastolic and systolic blood pressure 12.The most important muscle(s) of inspiration is (are) the: a.​ Diaphragm b.​ Rectus abdominis c.​ External intercostals d.​ Internal intercostals 13.Which of the following is least likely to have their VO2 max limited. a.​ Elite 3000 meter runner (2 miler) b.​ Pulmonary patient c.​ Healthy sedentary patient 14.In a healthy lung, ___ helps prevent the alveoli from collapsing. a.​ Mucus b.​ Oxygen c.​ Smooth muscle tissue  d.​ Surfactant 15.Which of the following does not house a major portion of the respiratory center? a.​ Cerebellum b.​ Medulla oblongata c.​ Pons 16. ____ is equal to breathing frequency multiplied by tidal volume. a.​ VO₂ max b.​ Forced vital capacity c.​ VE d.​ Total lung volume 17. Most CO₂ is transported through blood after: a.​ Binding to hemoglobin b.​ Being converted to bicarbonate c.​ Being dissolved  18. Which of the following would slow the rate of oxygen exchange from the lungs to the blood A. Increased area of alveoli (e.g. more Alveoli) B. Increased thickness of the Alveoli C. None of the above 19. What factors below cause oxygen to dissociate from hemoglobin more easily? A. Increased Temperature B. Decreased pH C. Both A and B D. Neither A nor B 20. Which of the following is NOT true concerning Hemoglobin? A. It transports its gas in the blood B. It increases a higher in slow twitch than in fast twitch fibers C. It ____ oxygen in skeletal muscle 21. According to the inylespho dissecretion curve: A. “____shift“ much in a greater dissociation of O2 from hemoglobin at the same level B. Oxygen decreases only from hemoglobin in the arteries where PO2 is high C. Both A and B D. Neither A nor B 22. The bicarbonate buffering system reduces the amount of _____in the blood A. Potassium B. Glucose C. Hydrogen ions D. Oxygen 23. Which of the following is true regarding the ventilatory threshold? A. It usually decreases with endurance training B. It represents the point where minute ventilation begins to rise above rest level C. It represents the point where minute ventilation breaks from a linear relationship work rate D. None of the above are true 24. Which of the following is most likely to be substantially lower in a bronchi patient (mucus build up in bronchi)? A rate of a single maximal expiration (FEV1) B volume of a single maximal expiration (FVC) C Residual volume D Total lung volume 25. Research has consistently shown “breathe right” nasal strips to significance to improve performance in which of the following? A Endurance event B Strength events C Both A and B D Neither A nor B 26. A ventilation perfusion ratio in the lung of approximately 1.0 is ideal for gas exchange A. True B. False 27. A linear relationship exists between exercise intensity and core temperature A. True B. False 28. A high percentage of body fat results in an increased ability to lose body fat during exercise A. True B. False 29. The body's thermostat (control center) is located in the: Answer—----- HYPOTHALAMUS 30. An increase in core body temperature results in: A. A decrease in brain blood flow B. A decrease in skin blood flow C. An increase in skin blood flow 31. When body temperature is decreased below normal, which of the following is typically increased to release metabolism? A. Aldosterone B. insulin C. D. Thymine 32. Which of the following is true regarding exercise and fluid replenishment during principal exercise? A. Sports drinks with electrolytes tend to help people rehydrate more effectively than plain water B. Heat-exercise athletes become acclimated, and , therefore do not need to take in the same amount of fluid in order to stay hydrated as lesser trained individuals C. Both A and B D. Neither A nor B 33. For each item below, circle the correct boldfaced adaptation to exercise training in a hot Environment. 1. Plasma volume will increase or decrease 2. Sweating will begin later or sooner during an exercise session 3. Less or more sweating will occur 4. The electrolyte concentration in sweat will be higher or lowe 34. Below are cardiovascular values for a young sedentary male at rest and at maximal exercise. After endurance training, state whether each corresponding value would be expected to be significantly (higher) , significantly (lower), or approximately the same. HEART RATE​​ STROKE VOLUME​ ​ CARDIAC OUTPUT Untrained rest 72 beats/min 70 mL/ beat 5 L/min Trained rest (Up, down, or front and back arrow for all three) Untrained Maximal 200 beats/min 110 mL/beat 22 L/min Exercise Trained Maximal Exercise​ ​ ​ (Up, down, or front and back arrow for all three) 35. List the 3 main determinants of venous return of blood to the heart during rhythmic exercise ​