Anatomy Bones and Muscles · MU Pleven

68. Pleura. Pleural cavity.

Covers the pleura as a two-layer serous membrane, the visceral and parietal layers, and the pleural cavity between them. It sets out the basic parts, the costodiaphragmatic, costomediastinal, phrenicomediastinal and vertebromediastinal recesses, and the ligaments forming the cupula. Histology, blood and lymphatic supply, innervation and the rib-line topography of the borders follow, then the composition and formation of pleural fluid and pleural effusion.

Inside: 10 sections · 6 labelled pictures · 10 flashcards · 4 min

Topic 67 of 236 in the MU Pleven syllabus for Anatomy Bones and Muscles (Medicine, Year 2). The free AceMed note covers it in 10 sections, about 612 words (4 min of reading), with 10 flashcards.

In this note

  1. PLEURA
  2. Basic parts :
  3. Pleural recesses :
  4. The Components of the pleural cupula
  5. Histology :
  6. Supply :
  7. Innervation :
  8. Topography :
  9. PLEURAL CAVITY
  10. Changes in pathological conditions :

PLEURA

  • The pleura is a smooth glossy membrane lining the thoracic cavity.
  • Consist of 2 layers:
  • Visceral pleura – covers the lung.
  • Parietal pleura – covers the internal surface of the thoracic cavity.

thicker

The space between the 2 layers known as the pleural cavity.

contains a small amount of the pleural fluid, this primes smooth movements of the lungs and pleura during breathing and ensure negative pressure in the thoracic cavity.

Basic parts :

  1. 1 Visceral pleura (pleura visceralis)
  2. 2 Mesopneumonium – the transition between the visceral and parietal pleura in the hilum of the lung
  3. 3 Pleural cavity (cavitas pleuralis)
  4. 4 Parietal pleura (pleura parietalis)
  5. 4.1 Pleural cupula (cupula pleurae)
  • – is located cranially between the scaleni
  1. 4.2 Costal part (pars costalis) – faces the ribs
  2. 4.3 Mediastinal part (pars mediastinalis) – faces me
  3. 4.4 Diaphragmatic part (pars diaphragmatica)
  • – faces the diaphragm

Pleural recesses :

Anteriorly and posteroinferiorly the pleural cavity is not completely filled by the lungs → recesses

  1. 5 Costodiaphragmatic recess (recessus costodiaphragmaticus)
  • – between the ribs and the diaphragm
  • – the deepest part of the pleural cavity
  1. 6 Costomediastinal recess (recessus costomediastinalis)
  • – the anterior border of the mediastinal pleura between the ribs and the anterior mediastinum
  1. 7 Phrenicomediastinal recess (recessus phrenicomediastinalis)
  • – between the diaphragm and the inferior mediastinum
  1. 8 Vertebromediastinal recess (recessus vertebromediastinalis)
  • – between the vertebrae and the mediastinum

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