1 / 26

Respiratory system

Respiratory system. Ch. 37.3 Video clip http:// www.youtube.com/watch?v=o2OcGgJbiUk. Function. exchange of oxygen and carbon dioxide between the blood , the air . Respiration. Cellular level. Organism level. the release of energy:

jaimie
Download Presentation

Respiratory system

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Respiratory system Ch. 37.3 Video clip http://www.youtube.com/watch?v=o2OcGgJbiUk

  2. Function exchange of oxygen and carbon dioxide between the blood, the air.

  3. Respiration Cellular level Organism level the release of energy: from the breakdown of glucose in the presence of oxygen. • gas exchange:

  4. The respiratory system consists of nose pharynx larynx trachea bronchi lungs

  5. pollen Air entering the respiratory system must be: warmed, moistened, and filtered. • Mucus moistens air and traps particles of dust or smoke. • Cilia sweep particles and mucus to the throat. • Mucus and particles are either swallowed or spit out. dust mucus

  6. Smog • Coal • Asbestos Pollution

  7. Pharynx vs. Larynx The Pharynx 1st The Larynx serves as a passageway for both air and food. • It is at the top of the trachea. • contains two elastic folds of tissue: vocal cords.

  8. The epiglottis: covers the entrance to the trachea when you swallow.

  9. Don’t speak: while you are eating!!! Why

  10. chocking

  11. http://auditoryneuroscience.com/?q=vocal_folds

  12. Vocal cords Vide http://www.youtube.com/watch?v=XsSdeey_0Xc

  13. The 2 Bronchi(bronchus singular) Two large air passages eachleads into one of the lungs Subdivide= Branch into bronchioles

  14. Purpose of branching? Increase surface area Approximately a tennis court surface area

  15. Functional units of the lungs alveoli

  16. Alveolus millions of tiny air sacs at the end of the bronchioles is Where the gas exchange takes place

  17. O2 from the alveoli diffuses into the blood CO2 in the blood diffuses into the alveolus. O2 CO2

  18. Respiratory and circulatory systems work together

  19. Hemoglobin Protein present in red blood cells It has Fe (iron) heme part that binds to O2

  20. What is the diaphragm? Flat Muscle that separates the abdominal cavity from the thoracic cavity. http://www.youtube.com/watch?v=hp-gCvW8PRY

  21. Breathing The movement of air into and out of the lungs. http://www.youtube.com/watch?v=hHQBFFu2ekw Is driven by air pressure: • the diaphragm contracts • This expands the volume of the chest cavity. • Creating a partial vacuum inside the cavity.

  22. The medulla oblongata Controls breathing Monitors carbon dioxide in the blood. As carbon dioxide increases, nerve impulses make the diaphragm contract, bringing air into the lungs. The higher the carbon dioxide level, the stronger the impulses.

  23. Emphysema is most often caused by smoking and long-term exposure to air pollution. Lung tissue looses elasticity alveoli are unable to hold their functional shape upon exhalation.

  24. Lung cancer Lung cancer is deadly because its cells can spread to other locations.

More Related