Table 2 shows the distribution of blood (%) at rest and during a cross-country race - OCR - GCSE Physical Education - Question 22 - 2020 - Paper 1

The part of the body that receives the most blood at rest is the liver, which receives 25% of blood according to Table 2.

During exercise, blood is redirected from non-essential organs (like the liver and skin) to the muscles. This enhances performance by providing more oxygen and nutrients to the muscles, allowing for improved endurance and strength. Additionally, this redistribution helps maintain body temperature by directing blood flow to the skin when necessary.

Red blood cells (RBCs) are crucial during a cross-country race as they transport oxygen from the lungs to the muscles. This oxygen is essential for aerobic respiration, enabling the muscles to produce energy efficiently and sustain performance throughout the race.

1. Providing structural support to the body, allowing for movement and maintaining body posture.
2. Protecting vital organs, such as the heart and lungs, during physical activity.
3. Facilitating movement through the attachment of muscles, enabling efficient locomotion during the race.