The respiratory system part 2

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Wesleypjones
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220391
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The respiratory system part 2
Updated:
2013-05-20 13:08:21
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respiratory system part
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The respiratory system part 2
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  1. ventricular folds
    two pairs of folds in the larynx this is the superior pair.  When they are brought together they function in holding the breath against pressure in the thoracic cavity, such as might occur when you strain to life a heavy object.
  2. vocal folds
    the other pair of folds found in the mucous membrane of the larynx. they vibrate and open and close to produce phonation.  They also control pitch and volume.
  3. trachea or wind pipe
    is a tubular passageway for air extends from the larynx. 16-20 incomplete rings of hyaline cartilage are stacked one above the other.  They offer a semi rigid support so that its wall does not collapse inward and obstruct the air passageway
  4. Bronchi
    the trachea divides into two of these
  5. right primary bronchus
    goes into the right lung.  It is more vertical, shorter and wider than the other. An aspirated object is more likely to enter here
  6. left primary bronchus
    goes into the left lung.
  7. secondary or lobar bronchi
    on entering the lungs the primary bronchi divide to form smaller bronchi.  One for each lobe of the lung.  the right lung has three and the left has two
  8. tertiary bronchi or segemental
    the secondary bronchi continue to branch, forming still smaller bronchi called these
  9. bronchioles
    tertiary bronchi divide into these which in turn branch repeatedly
  10. bronchial tree
    the extensive branching from the trachea is referred to as this.
  11. lungs
    are paired cone shaped organs in the thoracic cavity.  They are separated from each other by the heart
  12. pleural membrane
    encloses and protects the lungs by a double layered serous membrane
  13. parietal pleura
    the superficial layer of the pleural membrane. It lines the wall of the thoracic cavity
  14. visceral pleura
    deep layer of the pleural membrane.  It covers the lungs them selves
  15. pleural cavity
    found between the parietal and visceral pleura. it contains a small amount of lubricating fluid.  It reduces friction between the membranes
  16. base
    the broad inferior portion of the lungs.  It is concave and fits over the convex area of the diaphragm
  17. apex
    the narrow superior portion of the lung
  18. coastal surface
    the surface of the lungs lying against the ribs. It matches the rounded curvature of the ribs
  19. mediastinal surface
    this region contains the hilium, through which bronchi, pulmonary blood vessels, lymphatic vessels, and nerves enter and exit.
  20. root
    the hilius and its contents are held together by the pleura and connective tissue and constitute this
  21. cardiac notch
    the left lung contains a concavity called this, in which the heart lies.  Due to this fact the left lung is smaller than the right
  22. fissures
    divide each lung into lobes
  23. oblique fissure
    extends inferiorly and anteriorly
  24. horizontal fissure
    found only in the left lung
  25. superior and inferior lobe
    are separated by the oblique fissure in the left lung
  26. superior and inferior lobe
    in the right lung the superior part of the oblique fissure separates these
  27. inferior and middle lobe
    inferior part of the oblique fissure in the right lung separates this from this which is bordered superiorly by the horizontal fissure

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