Anatomy · MU Sofia

Internal Organs+Glands · 78. Pleura. Pleural cavity.

Covers the two layers of the pleura and the pleural cavity between them, naming the visceral and parietal parts and the parietal subdivisions such as the cupula, costal, mediastinal and diaphragmatic parts. It then describes the pleural recesses, the ligaments and membrane of the cupula, and the histology of the mesothelium. Blood and lymph supply, innervation and the topography of the pleural borders by rib and anatomical line follow, with a closing section on pleural fluid and pleural effusion.

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

Topic 72 of 264 in the MU Sofia syllabus for Anatomy (Dental Medicine, Year 2). The free AceMed note covers it in 10 sections, about 618 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 tho 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 primits smooth movements of the lungs and pleura during breathing and ensure negative pressure in the thoracic cavity.

Basic parts :

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

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

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