1 / 23

Respiratory System

Respiratory System. Breathing. Moving air in and out of the lungs. Inhalation. Breathing in Body gets oxygen from the air Rib muscles contract to pull ribs up and out Diaphragm muscle contracts to pull down the lungs Tissue expands to force (pull) in air. http://mhln.com. Exhalation.

parson
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

  2. Breathing Moving air in and out of the lungs

  3. Inhalation • Breathing in • Body gets oxygen from the air • Rib muscles contract to pull ribs up and out • Diaphragm muscle contracts to pull down the lungs • Tissue expands to force (pull) in air.

  4. http://mhln.com

  5. Exhalation • Breathing out - rib muscles relax • Diaphragm muscle relaxes • Get rid of carbon dioxide • Tissue returns to resting position and forces (pushes) air out

  6. http://mhln.com

  7. http://www.mikecurtis.org.uk/respiratory_system.htm

  8. Breathing involves the following structures • Mouth – Air can enter and leave, but isn’t cleaned • Nose - Place where the air is first cleaned, moistened and warmed • Pharynx (throat) • Trachea -wind pipe - carries air to bronchi • Lungs: • Bronchi (branches of windpipe going into lungs) • Bronchioles – smaller branches of bronchi • Alveoli – grape-like structure where gas exchage occurs with blood • Diaphragm – dome shaped muscle that contracts and relaxes to move air in and out of the body

  9. Also involved in breathing are… • Epiglottis – small flap of tissue that seals off the trachea when you swallow • Larynx – top part of trachea (beneath the epiglottis) – where the vocal cords (folds of connective tissue) are stretched across the opening

  10. Let’s review • Pathway of oxygen • Structures of the respiratory system • Why is the epiglottis important? • Why can’t you hold your breath and talk at the same time?

  11. In the lungs… • Inside the lung, the tubes divide into smaller and smaller tubes called bronchioles. • At the end of each of these tubes are small air sacs called alveoli. • Capillaries are wrapped around these alveoli.

  12. http://www.emc.maricopa.edu/

  13. Diffusion http://www.mtsinai.org/

  14. What happens in the Alveoli… • Capillary walls are so thin and close to the alveoli that the air easily diffuses (passes through) between them. • Oxygen diffuses into the capillaries to be carried through the bloodstream. • Carbon dioxide in the capillaries diffuses into the alveoli, and is then removed from the body when we exhale.

  15. http://users.tpg.com.au/users/amcgann/body/respiratory.html

  16. What about… • Sneezing – clears out the nasal cavity of any foreign particles • Yawning – brings more oxygen into the lungs • Coughing – air from the lungs expels foreign particles

  17. Respiratory System • Function: • Bring in oxygen to the body and release carbon dioxide from the body

  18. Breathing and Respiration are NOT the same thing!

  19. Breathing Moving air in and out of the lungs

  20. Respiration • Exchange of oxygen and carbon dioxide between the capillaries and the alveoli. • Chemical reaction that uses reactants oxygen and glucose to produce energy, carbon dioxide and water

  21. Diseases & Disorders • Emphysema– the alveoli in the lungs are destroyed, limiting the ability to get oxygen and release carbon dioxide • Chronic bronchitis – instead of helping to clean the lungs, the mucus blocks your airways. The mucus is thicker and more difficult to cough up. This means it's easier for bacteria to settle in your lower airways and become infected. • Asthma –disorder of the lungs in which there may be a shortness of breath, wheezing and coughing. • Lung cancer – cancerous cells (tumors) take away space in the lungs

More Related