Human Heart Structure & Function + Pulse Rate During Exercise Exam Question Explained A & O Level

Welcome back to Learn With Miss Sehrish 💙 In this lesson, we solve and fully explain a structured exam question based on the human heart and changes in pulse rate during exercise, commonly asked in A Level & O Level Biology exams. This video focuses on Question 1, including diagram labeling, functions of heart parts, and data interpretation related to a 5000-metre race. ❤️ Part 1: Human Heart Diagram & Blood Vessels (Question 1a) The video explains a labeled diagram of the human heart and main blood vessels, including: Heart Chambers Right atrium Right ventricle Left atrium Left ventricle Major Blood Vessels Aorta Pulmonary artery Pulmonary vein Vena cava Functions Explained Movement of oxygenated and deoxygenated blood Role of ventricles vs atria Why the left ventricle has a thicker wall Direction of blood flow through the heart Function of valves in preventing backflow Students learn how to match each structure with its function, exactly as required in Table-based exam questions. 🏃 Part 2: Pulse Rate During a 5000-Metre Race (Question 1b) A group of students recorded the pulse rate of an athlete using a heart monitor before, during, and after a 5000 m race. Explanation Includes: Why pulse rate increases at the start of the race Increased demand for oxygen and glucose Role of respiration in releasing energy Increased carbon dioxide removal Effect of adrenaline on heart rate Why pulse rate remains high during exercise Why pulse rate gradually decreases after the race Oxygen debt and recovery period This section teaches students how to explain trends in data, a key skill for 6-mark structured questions. 🎯 Learning Outcomes By the end of this lesson, students will be able to: ✔ Identify and describe heart structures and blood vessels ✔ Explain functions of each heart part clearly ✔ Interpret data from heart-rate monitors ✔ Explain changes in pulse rate during exercise and recovery ✔ Use correct biological terms in exam answers ✔ Score higher in structured and data-based questions 📌 Helpful For ✔ A Level Biology students ✔ O Level / IGCSE Biology students ✔ Exam-focused revision ✔ Understanding exercise physiology ✔ Practicing explanation-based questions human heart structure and function, pulse rate during exercise biology, heart monitor exam question, a level biology heart question, o level biology circulation, 5000 meter race pulse rate, heart rate graph explanation, adrenaline and heart rate, structured biology questions, Learn With Miss Sehrish biology. “heart structure and function exam question” “why pulse rate increases during exercise” “heart rate during running biology” “a level biology heart explanation” “how to explain pulse rate graph” ❤️ Support the Channel If this video helped you: 👍 LIKE the video 💬 COMMENT if you want more past-paper questions explained 🔔 SUBSCRIBE to Learn With Miss Sehrish for more A & O Level Biology and Chemistry lessons. Your support helps more students succeed in biology exams!