thorax part 13.txt

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Author:
Anonymous
ID:
172423
Filename:
thorax part 13.txt
Updated:
2012-09-21 19:20:49
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thorax
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Description:
Thoracic cavity
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  1. middle of thoracic cavity
    mediastinum
  2. Lateral sections of the thoracic cavity
    pleura and lungs
  3. Thoracic inlet
    opening where the thoracic cavity communicates with the root of the neck (thoracic outlet to clinicians); passage of many vessels and nerves, esophagus and trachea
  4. Borders of the thoracic inlet
    posterior: 1st thoracic vertebra; lateral: medial borders of 1st ribs/costal cartilages, anterior: superior border of manubrium
  5. Thoracic outlet
    thoracic cavity communicates with the abdomen; passage of esophagus and many large vessels and nerves
  6. Borders of the thoracic outlet
    Posterior: 12th thoracic vertebra; lateral: curving costal margin, Anterior: xiphisternal joint and closed by diaphragm
  7. Mediastinum location
    area between 2 pleura - extends from the thoracic inlet to the diaphragm; and from the sternum to the 12 thoracic vertebrae
  8. Where is the mediastinum split into superior and inferior mediastinum?
    sternal angle & 4th thoracic vertebra
  9. Regions of the inferior mediastinum
    middle, anterior, posterior
  10. Mediastinoscopy
    Use of a mediastinoscope inserted into a small incision at the root of the neck, superior to the manubrium near the jugular notch to view or biopsy mediastinal lymph nodes for diagnostic purposes
  11. Mediastinitis
    Inflammation of the neck; can spread from neck to thorax
  12. Problems caused by a tumor in the mediastinum
    Many vital structures crowded together; tumor of the left lung can rapidly spread to involve medistinal lymph nodes which can compress recurrent laryngeal nerve and produce paralysis of left vocal fold; expanding cyst can occlude SVC (congestion of veins of the upper part of the body)
  13. Trachea
    Mobile cartilaginous and membranous tube
  14. Location of the trachea
    continuation of larynx and the lower border of the cricoid cartilage; level of 6th vertebra
  15. What keeps trachea from collapsing?
    U-shaped cartilage rings embedded in its wall
  16. Where does trachea divide in bronci?
    level of the sternal angle
  17. How do R and L bronchi differ?
    R Wider, shorter, more vertical
  18. Divisions of R bronchus
    Superior lobar (off R main bronchus before entering hilum), middle lobar (off R main bronchus when entering hilum), and inferior lobar
  19. Divisions of L bronchus
    superior lobar and inferior lobar on entering the hilum
  20. Parietal pleura
    lines thoracic wall, covers the thoracic surface of the diaphragm, and lateral surface of the mediastinum (cannot be anesthetized
  21. Where do parietal and visceral pleura become continuous?
    hilum of each lung; form a cuff that surrounds the structures entering and leaving the lung
  22. Visceral pleura
    covers the outer surface of the lungs and extends into the interlobar fissures
  23. Lung root
    Where the lung connects to heart and trachea
  24. Pulmonary ligament
    loose extension of the cuff below the lung root to allow for movement during respiration
  25. Pleural cavity
    a slit like space that separates the parietal and visceral pleura
  26. Pleura fluid
    FLuid in pleural cavity that allows for frictionless movement
  27. Costodiaphragmatic recess
    the lowest area of the pleural cavity into which they expand on deep inspiration (where fluid collects)

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