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Breathing

Breathing. By Neil Bronks. The big muscle that pulls the lungs down and pushes out the air is called the diaphragm The rib muscles help. Breathing. Demo of lungs. The Respiratory System. Trachea – has stiff rings of cartilage to prevent it collapsing. Bronchi. Bronchioles.

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Breathing

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  1. Breathing By Neil Bronks

  2. The big muscle that pulls the lungs down and pushes out the air is called the diaphragm The rib muscles help Breathing

  3. Demo of lungs

  4. The Respiratory System Trachea – has stiff rings of cartilage to prevent it collapsing Bronchi Bronchioles Rib muscles – to raise and lower the ribs Ribs – to protect the chest Lung Alveoli (“air sacs”) – gas exchange takes place here Diaphragm – muscular sheet pulls air into lungs

  5. Gas Exchange • Small sacs in the lungs are surrounded by capillaries . It is in these ALVEOLI that oxygen enters our blood and the co2 leaves • Alveoli are very good at exchanging gases because… • They have a LARGE surface area • They have a good blood supply • Very thin walls

  6. 0.03% 3% Gas Exchange Air breathed in Air breathed out 21% 18% 79% 79%

  7. Air from lungs Limewater Limewater turns milky/cloudy Testing for carbon dioxide Proves Carbon Dioxide exhaled air

  8. Extract dissolved oxygen from the water. Water passes over membranes in neck Fish breath with gills

  9. Insects breath air by a system of air-filled tubes called tracheae. Tracheae open to the outside through small holes called spiracles Insects

  10. Half the people who smoke WILL die early Tar/Toxins in the smoke causes many diseases Heart Attacks, Lung cancer, emphysema etc etc etc Smoking

  11. 1) Blood gets pumped from the heart to the lungs and picks up oxygen 2) The blood is then taken back to the heart… • The heart pumps the blood to the intestine (where glucose is added)… 5) After the oxygen and glucose have been removed for respiration the blood is sent back to the heart and starts again 4) … and to the rest of the body (where oxygen and glucose is removed) Circulation

  12. Respiration means releasing energy from food Glucose in the food is broken down inside cells, and energy is released Most organisms use oxygen for this process – so it is called aerobic respiration carbon dioxide glucose water energy oxygen cell

  13. Respiration means releasing energy from food Glucose in the food is broken down inside cells, and energy is released Most organisms use oxygen for this process – so it is called aerobic respiration carbon dioxide glucose water energy oxygen cell

  14. A while ago we learnt about ___ ______. Each of these life processes needs ENERGY. ___________ is the process our bodies use to produce this energy: Glucose + Oxygen Water + Carbon Dioxide + ENERGY The glucose we need comes from ______ and the oxygen from _________. Water and carbon dioxide are breathed out. The MAIN product of this equation is _________. Respiration Words – breathing, energy, Mrs Gren, respiration, food

  15. Summary Diaphragm Alveoli Gas Exchange Aerobic Glucose + Oxygen  Water + Carbon Dioxide + ENERGY Trachea Bronchioles/Bronchus Respiration release of energy Smoking/Lung Cancer Gills/Spiracles Limewater

  16. Hwp 45Q 1,3,4,5,7.

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