Jigsaw learning assignment Chapter 8 Cardiorespiratory Responses to Acute Exercise PART 1: You will be assigned to 1 of 5 HOME groups. Each group will be responsible for learning the material directed by the questions provided. Utilize your textbook, web study guide and any other outside sources to answer questions. As a group, develop how best to relay (teach) these concepts to other students. PART 2: Then we will re-organize groups into 1 of 5 EXPERT groups (1 member from each HOME group). Each member of group will answer (teach) the rest of the members the concepts and questions assigned in the HOME group. PART 3: Return to home groups and review questions together to ensure understanding. Group 1: 1. Describe how heart rate, stroke volume and cardiac output respond to increasing rates of work. Illustrate how these three variables are interrelated. 2. How do we determine HRmax? What are alternative methods using indirect estimates? What are the major limitations of these indirect methods? 3. Describe two important mechanisms for returning blood back to the heart during exercise in an upright position. Group 2 1. How does blood pressure response to exercise? 2. What are the major cardiovascular adjustments that the body makes when someone is overheated during exercise? 3. What is cardiovascular drift? What two theories have been proposed to explain this phenomenon? Group 3 1. Describe the primary functions of blood. 2. What changes occur in the plasma volume and red blood cells with increasing levels of exercise? 3. What changes occur in the plasma volume and red blood cells with prolonged exercise in the heat? Group 4 1. Describe how pulmonary ventilation is regulated. What are the chemical stimuli that control the depth and rate of breathing? 2. How does pulmonary ventilation respond to increasing intensities of exercise? 3. What is meant by the terms dyspnea, hyperventilation, valsalva maneuver, an ventilatory threshold. Group 5 1. What role does the respiratory system play in acid base balance. 2. What is normal resting pH for arterial blood? For muscle? How are these values changed as a result of exhaustive sprint exercise? 3. What are the primary buffers in the blood? In the muscle?