8 Klass Biologija Dragomilov Laboratornaja: Rabota 6 Spishi.ru

If your heart rate returns to near-resting levels within 3–5 minutes, your cardiovascular system is functioning normally. A slow recovery may indicate a lack of physical fitness. Evaluation of Results:

Sit down and measure your pulse again after 3 minutes of rest. Example: 75 bpm . Conclusion/Answers: If your heart rate returns to near-resting levels

Immediately measure your pulse for 15 seconds and multiply by 4. Example: 30 beats in 15 sec × 4 = 120 bpm . Example: 75 bpm

During physical activity, muscles require more oxygen and nutrients. The heart beats faster to pump blood more quickly to meet this demand and to remove carbon dioxide ( CO2cap C cap O sub 2 During physical activity, muscles require more oxygen and

Depending on your specific edition of the textbook, Laboratory Work №6 might alternatively be "The Composition of Inhaled and Exhaled Air." If your lab involves limewater and blowing through a straw, the answer is that exhaled air turns limewater cloudy because it contains more carbon dioxide than atmospheric air.

Sit quietly for 2–3 minutes. Measure your pulse for 15 seconds and multiply by 4. Example: 18 beats in 15 sec × 4 = 72 bpm . Activity: Perform 20 deep squats in 30–40 seconds.

Laboratory Work №6: Changes in Heart Rate (HR) During Physical Activity