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Biology Pre-Test Followup !!

Biology Pre-Test Followup !!. Agenda for Today!. Pre-Test follow up and discussion on the Respiratory system of mammals. Group Discussion Group Article / Reading Assignment Break Human Respiratory System – Structures and Functions! Extra time: Debates + hand in pre-tests.

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Biology Pre-Test Followup !!

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  1. Biology Pre-Test Followup!!

  2. Agenda for Today! • Pre-Test follow up and discussion on the Respiratory system of mammals. • Group Discussion • Group Article / Reading Assignment • Break • Human Respiratory System – Structures and Functions! • Extra time: Debates + hand in pre-tests.

  3. What are these scientists doing? What happens to the mouse?

  4. Get into groups of 5 and think of the best answer to these questions. • What is the function of the respiratory system? • What is the role of blood in our lungs? • What properties must the liquid have to keep the mouse alive?

  5. Liquid Breathing Discussion! • Read the article as a group. Look up any unfamiliar words and find the definition. • Assign a person in each group to be the speaker, reader, writer, definition finder, etc. • Find the best possible answer to each question and submit the final copy.

  6. Resp. System Review and Crossword! • Use your textbook to complete the diagram of the lungs. Write the name (and function!) of the 6 main respiratory system structures.Additions to the diagram: • #7 – Diaphragm • #8 -- Bronchioles • Q. 11 – What structure prevents food / liquid from entering the resp. system?

  7. Respiratory System Diagram

  8. What does each organ do?Write extra information in your notebooks. 1) Nasal Cavity – cilia and mucus trap and remove dust. Air is warmed or cooled to match body temp.(~36.8ºC)

  9. What does each organ do? 2) Pharynx Helps filter, warm (or cool) and moisten air before it reaches the lungs. 3) Larynx (“voice box”) Manipulates pitch and volume of people’s voices. Protects trachea from choking on food.

  10. What does each organ do? 4) Trachea – Mucus-lined tube that connects the pharynx and larynx to the lungs. Biotechnology extra note – In 2008 a woman was given a new trachea, grown from her own stem cells. In 2011, a man was given a synthetic windpipe (trachea)!

  11. Biotechnology issue… Do you think the ability to grow replacement organs could encourage people to start smoking? Should there be exceptions to who gets an organ transplant?

  12. What does each organ do? 5) Lungs Soft, sponge-like organ where air is drawn into. Maximum surface area allows for efficient gas exchange.

  13. What does each organ do? 6) Alveoli – Air-Filled sacs at the terminal end of the bronchioles. They are surrounded by capillaries, where gas exchange with the blood takes place.

  14. Gas exchange at the cellular level

  15. 7) What is a bronchiole? • Smaller branches of the bronchi / trachea that connects to the individual alveoli.

  16. Diseases associated with smoking: • Emphysema • Lung Cancer • Mouth Cancer • Stains teeth, gums, clothing and walls!

  17. Question #9: -- Emphysema

  18. 10 – How do the resp. and circulatory systems work together? • During (and after!) exercise your respiration and heart-rate go up, increasing blood flow and gas exchange rates. • This helps deliver oxygenated blood to the heart and other muscles as they work!

  19. 11. What structure prevents food and liquids from entering the lungs / trachea? • The Epiglottis, a flap made of cartilage attached to the entrance of the larynx.Draw this structure onto your diagram!

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