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Understanding Respiratory Functions in the Human Body

Learn about the vital role of the respiratory system in bringing oxygen and nutrients to cells, the gas exchange process, and the functions of key respiratory organs. Explore how breathing works and the consequences of oxygen deprivation.

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Understanding Respiratory Functions in the Human Body

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  1. 30.1 Respiratory Functions 2.1 Atoms, Ions, and Molecules Set up Cornell Notes on pg. 43 Topic: 30.1 Respiratory Functions • Essential Question: None. KEY CONCEPT The respiratory and circulatory systems bring oxygen and nutrients to the cells. Drug Essay DUE TOMORROW

  2. Intro to the Respiratory System (1m15s)

  3. Imagine that you have just been running or exercising strenuously. Please give examples of what happens to your body. How do you feel? Heart? Lungs? Chest?

  4. Practice Test Word Bank: Lungs Epiglottis (epi-glot-us) Bronchioles (bronk-ee-ols) Nose Trachea (tray-kee-uh) Alveoli (al-vee-o-lie) Diaphragm (die-a-fram) Bronchi (bronk-ai) Mouth 1. 9. 8.

  5. nose mouth 1. epiglottis trachea bronchi lungs 9. bronchioles diaphragm alveoli 8.

  6. KEY CONCEPT The respiratory and circulatory systems bring oxygen and nutrients to the cells.

  7. The respiratory system is where gas exchange occurs. sinus nose mouth epiglottis trachea lungs • What are the gases involved with the respiratory system?

  8. picks up oxygen from inhaled air • expels carbon dioxide and water

  9. The respiratory system moves gases into and out of the blood. It is the only place where gases in the blood are exchanged with gases from the atmosphere

  10. Breathing involves the diaphragm and muscles of the rib cage. Air flows from areas of high pressure to low pressure. Air inhaled. Air exhaled. Muscles and rib cage relax. Muscles contract and rib cage expands. Diaphragm flattens and moves downward. Diaphragm relaxes and rises.

  11. What happens when areas of the body do not get oxygen? • What happens when a tourniquet is put on?

  12. Draw and label the parts of the lungs on the bottom of pg 43 Bronchi or Bronchus trachea bronchiole alveoli

  13. Respiratory System Overview (3m4s)

  14. On pg. 42 set up a respiratory system tree map describing the functions of each… Nose & mouth Epiglottis Trachea Lungs Bronchi Bronchioles Alveoli bronchi alveoli bronchioles

  15. Parts and Functions of the Respiratory system (4m22s) • Add notes from the video to your tree map • Nose • Epiglottis • Trachea • Bronchi • Bronchioles • Alveoli

  16. On pg. 42 make a respiratory system tree map describing the functions of each… Nose & mouth Epiglottis Trachea Lungs Bronchi Bronchioles Alveoli • Focus on FUNCTION! • 910-912 bronchi alveoli bronchioles

  17. Review your tree map with your table. • Be ready to share (random) bronchi alveoli bronchioles

  18. Nose and mouth are entry points Epiglottis regulates airflow into the trachea- and keeps food from blocking the airways Trachea is the major airway to the lungs Lungs are organs that absorb oxygen and exhale carbon dioxide Bronchi are bronchioles are airways to the alveoli **Alveoli are main sites of gas exchange; absorb oxygen Functions of the parts of the respiratory system

  19. Slim Goodbody: The Inside Story: The Breath of Life (3m55s) • Yes…I’m serious

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