Post by Admin on Nov 21, 2016 11:50:30 GMT
Respiration
• Respiration is the release of energy from food.
• Respiration produces energy, carbon dioxide and water vapour.
• Aerobic respiration requires oxygen.
• The word equation for aerobic respiration is: Glucose + Oxygen = Energy + Carbon Dioxide + Water Vapour.
The Breathing System
• The human breathing system consists of the nose, mouth, windpipe, lungs, bronchi, bronchioles, alveoli and diaphragm.
• Rings of cartilage surround the windpipe, bronchi and bronchioles to keep them open.
• Gas exchange takes place in the alveoli.
• Carbon dioxide is tested for by passing it through limewater. Limewater turns milky if carbon dioxide is present.
• Exhaled air contains more carbon dioxide than inhaled air.
Smoking
• Smoking for a long time can cause lung cancer, but it can also have other harmful effects.
• Particles of smoke irritate the lungs and produce mucus, leading to diseases such as bronchitis.
• Smoking during pregnancy can damage the baby.
• Respiration is the release of energy from food.
• Respiration produces energy, carbon dioxide and water vapour.
• Aerobic respiration requires oxygen.
• The word equation for aerobic respiration is: Glucose + Oxygen = Energy + Carbon Dioxide + Water Vapour.
The Breathing System
• The human breathing system consists of the nose, mouth, windpipe, lungs, bronchi, bronchioles, alveoli and diaphragm.
• Rings of cartilage surround the windpipe, bronchi and bronchioles to keep them open.
• Gas exchange takes place in the alveoli.
• Carbon dioxide is tested for by passing it through limewater. Limewater turns milky if carbon dioxide is present.
• Exhaled air contains more carbon dioxide than inhaled air.
Smoking
• Smoking for a long time can cause lung cancer, but it can also have other harmful effects.
• Particles of smoke irritate the lungs and produce mucus, leading to diseases such as bronchitis.
• Smoking during pregnancy can damage the baby.