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How the Lungs Get Oxygen to the Rest of the
Body
How the Lungs Get Oxygen to the Rest of the
BodyLeah Fessler, Claire
Bradach, Sara UebeleinLeah Fessler, Claire
Bradach, Sara Uebelein
Overview Diagram of Lungs
Overview Diagram of Lungs
QuickTime™ and a decompressor
are needed to see this picture.
http://healthforself.today.com/files/2009/06/lungs-1.jpg
How Does Mucus Help?How Does Mucus Help?
Mucus coats and protects the linings of of breathing tubes and pulmonary tubes
Any irritant: dust, bacteria, airborne particles stick to thin mucus coatings
Protects against bacterial or viral invasion, infections or inflammation
Traps foreign substances before they can invade respiratory system
References: 5, 6
Mucus coats and protects the linings of of breathing tubes and pulmonary tubes
Any irritant: dust, bacteria, airborne particles stick to thin mucus coatings
Protects against bacterial or viral invasion, infections or inflammation
Traps foreign substances before they can invade respiratory system
References: 5, 6
How Do Cilia Help?How Do Cilia Help? Little hairs lining
pulmonary tubes Move mucus containing
any pollutants upward towards throat to the epiglottis
Continuous wave-like movements
Epiglottis opens allowing mucus to be swallowed, or coughed up in mouth
References: 5
Little hairs lining pulmonary tubes
Move mucus containing any pollutants upward towards throat to the epiglottis
Continuous wave-like movements
Epiglottis opens allowing mucus to be swallowed, or coughed up in mouth
References: 5
QuickTime™ and a decompressor
are needed to see this picture.
http://medicalimages.allrefer.com/large/respiratory-cilia.jpg
Cilia Animation: http://www.youtube.com/watch?v=by6DKnvl5nE
Function of the Bronchioles
Function of the Bronchioles
Fine branchings off “bronchial tree”
Further warm, moisten, and clean air
Carry oxygen to alveoli for gas exchange
References: 7
Fine branchings off “bronchial tree”
Further warm, moisten, and clean air
Carry oxygen to alveoli for gas exchange
References: 7
QuickTime™ and a decompressor
are needed to see this picture.
http://www.clarian.org/ADAM/doc/graphics/images/en/1103.jpg
What are Alveoli?What are Alveoli?
an alveolus is a tiny air sac covered in capillaries
lungs have about 300 million alveoli
gas exchange occurs in alveoli
oxygen diffused from alveoli into blood
carbon dioxide diffused from blood into alveoli
an alveolus is a tiny air sac covered in capillaries
lungs have about 300 million alveoli
gas exchange occurs in alveoli
oxygen diffused from alveoli into blood
carbon dioxide diffused from blood into alveoli
QuickTime™ and a decompressor
are needed to see this picture.
http://www.3dscience.com/img/Products/Images/clip_art/respiratory_alveoli_web.jpg
References: 1, 4, 9
Alveoli Structure and Function
Alveoli Structure and Function
Structure
• Arranged in grape like clusters
•Thin walls (1 cell thick )
•Densely covered with blood capillaries
•Moist walls
Function
• Increase surface area for gas exchange
•Rate of diffusion of O2 and CO2 increased between alveoli and blood
•Large contact area between alveoli and blood supply
•Aids rate of diffusion of gases
References: 4
LobesLobes
SECTIONS: Right lung has 3,
left lung has 2 Opening for air to
move in and out
References: 1, 3
SECTIONS: Right lung has 3,
left lung has 2 Opening for air to
move in and out
References: 1, 3IMAGE: http://www.le.ac.uk/pathology/teach/va/anatomy/case2/frmst2.html
PleuraPleura
2 membranes with fluid in between
Surround each lobe of lungs
Separate lung from chest wall
Holds lung to wall, which allows lung to expand
Pleural effusion - too much fluid
References: 1, 8
2 membranes with fluid in between
Surround each lobe of lungs
Separate lung from chest wall
Holds lung to wall, which allows lung to expand
Pleural effusion - too much fluid
References: 1, 8
QuickTime™ and a decompressor
are needed to see this picture.
IMAGE: http://www.aurorahealthcare.org/healthgate/images/si55551434.jpg
Blood VesselsBlood Vessels PULMONARY ARTERY
takes deoxygenated blood to capillaries
Gas exchange (passive diffusion) between CAPILLARIES and alveoli
PULMONARY VEIN takes oxygenated blood away from capillaries
References: 1, 3
PULMONARY ARTERY takes deoxygenated blood to capillaries
Gas exchange (passive diffusion) between CAPILLARIES and alveoli
PULMONARY VEIN takes oxygenated blood away from capillaries
References: 1, 3
QuickTime™ and a decompressor
are needed to see this picture.
http://media-2.web.britannica.com/eb-media/37/92937-034-1E4EA526.jpg
Gas Exchange
Lung Animations From Youtube!
Lung Animations From Youtube!
http://www.youtube.com/watch?v=d-f3RL0KiUg&feature=PlayList&p=0850BBABD41573E1&index=3 (watch whole video)
http://www.youtube.com/watch?v=HiT621PrrO0 (watch from 50 seconds on)
Cilia animation located on Cilia slide
http://www.youtube.com/watch?v=d-f3RL0KiUg&feature=PlayList&p=0850BBABD41573E1&index=3 (watch whole video)
http://www.youtube.com/watch?v=HiT621PrrO0 (watch from 50 seconds on)
Cilia animation located on Cilia slide
BibliographyBibliography1. "How Lungs Work." LungUSA.org. American Lung Association, 2009. Web. 9 Nov. 2009.
<http://www.lungusa.org/your-lungs/how-lungs-work/>.
2. "Human Physiology - Respiration." People.eku.edu. Eastern Kentucky University. Web. 9 Nov. 2009.
<http://people.eku.edu/ritchisong/301notes6.htm>.
3. "Anatomy & Physiology of the Respiratory System." Le.ac.uk. University of Leicester. Web. 9 Nov. 2009.
<http://www.le.ac.uk/pa/teach/va/anatomy/case2/frmst2.html>.
4. "Alveoli." Coolschool.ca. BC Learning Network. Web. 9 Nov. 2009.
<http://www.coolschool.ca/lor/BI12/unit11/U11L03.htm>.
5. "Anatomy and Function of the Normal Lung." Thoracic.org. American Thoracic Society, 2009. Web. 9 Nov. 2009.
<http://www.thoracic.org/sections/copd/for-patients/anatomy-and-function-of-the-normal-lung.html>.
6. "Mucus." Sinuswars.com. Sinus Wars, 2009. Web. 9 Nov. 2009. <http://www.sinuswars.com/mucus.asp>.
7. "Human Respiration." Britannica.com. Encyclopedia Britannica, 2009. Web. 9 Nov. 2009.
<http://www.britannica.com/EBchecked/topic/499530/human-respiration/66130/Structural-design-of-the-airway-tree>.
8. Stitham, Sean O., and Benjamin Medoff. "Pleural Effusion." National Library of Medicine. 29 Aug 2008. National Institutes
of Health, Web. 9 Nov 2009. <http://www.nlm.nih.gov/medlineplus/ency/article/000086.htm>.
9. Starr, Cecie, and Ralph Taggart. Biology, The Unity and Diversity of Life. 9th edition. Pacific Grove, CA: Brooks/Cole, 2001