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Gas Exchange We need to get oxygen into the blood from the air, and we need to remove waste carbon dioxide from the blood into the air. Moving gases like this is called gas exchange. The alveoli are adapted to make gas exchange in the lungs happen easily and efficiently. Alveoli allow this because they give the lungs a really big surface area, have moist thin walls (just one cell thick) and they have a lot of tiny blood vessels called capillaries. If you do a lot of exercise, your cells need a lot of energy and therefore a lot of oxygen and glucose. Your heart beats faster to speed up the supply of oxygen and glucose to your cells. However during intense exercise your heat cannot supply your cells quickly enough to release all the energy they need. During intense exercise, your cells start to do a different type of respiration, anaerobic respiration (respiration without oxygen). Anaerobic respiration releases less energy and make a chemical called lactic acid. This can cause cramp. It is not just during exercise that your cells do not get enough oxygen, illness and high altitude can also reduce the oxygen supply to your cells. Gas Exchange We need to get oxygen into the blood from the air, and we need to remove waste carbon dioxide from the blood into the air. Moving gases like this is called gas exchange. The alveoli are adapted to make gas exchange in the lungs happen easily and efficiently. Alveoli allow this because they give the lungs a really big surface area, have moist thin walls (just one cell thick) and they have a lot of tiny blood vessels called capillaries. If you do a lot of exercise, your cells need a lot of energy and therefore a lot of oxygen and glucose. Your heart beats faster to speed up the supply of oxygen and glucose to your cells. However during intense exercise your heat cannot supply your cells quickly enough to release all the energy they need. During intense exercise, your cells start to do a different type of respiration, anaerobic respiration (respiration without oxygen). Anaerobic respiration releases less energy and make a chemical called lactic acid. This can cause cramp. It is not just during exercise that your cells do not get enough oxygen, illness and high altitude can also reduce the oxygen supply to your cells. List three ways which alveoli are adapted to allow gas exchange: 1) 2) 3) List three ways which alveoli are adapted to allow gas exchange: 1) 2) 3) List three ways which alveoli are adapted to allow gas exchange: 1) 2) 3) List three ways which alveoli are adapted to allow gas exchange: 1) 2) 3) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) Why is anaerobic respiration not as efficient/good as aerobic respiration? 1) 2) When does your body need to use anaerobic respiration? 1) 2) 3) When does your body need to use anaerobic respiration? 1) 2) 3) When does your body need to use anaerobic respiration? 1) 2) 3) When does your body need to use anaerobic respiration? 1) 2) 3) When does your body need to use anaerobic respiration? 1) 2) 3)