QS Study

The lungs are a pair of breathing organs located with the chest which remove carbon dioxide from and bring oxygen to the blood. They are located in the chest, either side of the mediastinum. They are covered by a thin tissue layer called the pleura. Their main function is to oxygenate the blood. Right, Lung contains – Oesophagus, Heart, Inferior vena cava, Superior vena cava, and Azygous vein.

Medial surface of the right lung:

The mediastinal surface of the right lung can be considered in terms of the lung root and surrounding surface characteristics. The right mediastinal surface primarily includes the right atrium. Above the right atrium are present superior vena cava and right brachiocephalic vein. Behind these structures are present the trachea and esophagus.

The medial surface is divided into two parts:

1) Vertebral surface: It is related to the bodies of the thoracic vertebrae & intervening intervertebral discs, posterior intercostal vessels and splanchnic nerves.

2) Mediastinal surface: It is related to the contents of the mediastinum. Its relations are as follows:

(a) Hilum of the lung.

(b) Pulmonary ligament.

(c) Cardiac impression: It consists of

  1. an anterior surface of the right auricle.
  2. anterior and right surfaces of the right atrium.
  3. partly the anterior surface of the right ventricle.

(d) Right phrenic nerve with pericar diophrenic vessels.

(e) Right vagus nerve.

(f) Inferior vena cava.

(g) Superior vena cava.

(h) Right brachiocephalic vein.

(i) Azygos vein.

(j) Trachea.

(k) Oesophagus.

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