Question: What Is A Mediastinum In Anatomy?

Where is the mediastinum located and what is its function?

The mediastinum is the area in the chest between the lungs that contains the heart, part of the windpipe (the trachea), the esophagus, and the great vessels including the ascending aorta (the large artery which carries blood from the left ventricle of the heart on its way to the rest of the body) and right and left

What organs are contained in mediastinum?

The mediastinum houses many vital structures including the heart, great vessels, trachea, and essential nerves. It also functions as a protected pathway for structures traversing from the neck, superiorly, and into the abdomen, inferiorly.

What are the contents of middle mediastinum?


  • pericardium.
  • heart.
  • great vessels joining the heart. ascending aorta. pulmonary trunk. right pulmonary artery. left pulmonary artery. the lower half of the superior vena cava.
  • tracheal bifurcation and both main bronchi.
  • phrenic nerves.
  • cardiac plexus.
  • tracheobronchial lymph nodes.
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What is the importance of mediastinum for the lungs?

The mediastinum is typically considered to be the area between the lungs, excluding the heart and pericardium. The mediastinum contains the major vessels leading to and emanating from the heart, nerves (e.g., the phrenic nerve to the diaphragm), and lymph nodes.

What does mediastinum mean?

Listen to pronunciation. (MEE-dee-uh-STY-num) The area between the lungs. The organs in this area include the heart and its large blood vessels, the trachea, the esophagus, the thymus, and lymph nodes but not the lungs.

What is mediastinum and its types?

The mediastinum is an area found in the midline of the thoracic cavity, that is surrounded by the left and right pleural sacs. It is divided into the superior and inferior mediastinum, of which the latter is larger. The inferior mediastinum is further divided into the anterior, middle and posterior mediastinum.

Are the lungs found in the mediastinum?

Mediastinum, the anatomic region located between the lungs that contains all the principal tissues and organs of the chest except the lungs. The mediastinum is a division of the thoracic cavity; it contains the heart, thymus gland, portions of the esophagus and trachea, and other structures.

What is the mediastinal pleura?

Listen to pronunciation. (MEE-dee-uh-STY-nul PLOOR-uh) The thin membrane that lines the chest cavity in the area between the lungs.

Is the aorta located in the mediastinum?

Abstract. The mediastinum is the region of the thoracic cavity located between the two lungs. Included within the mediastinum are numerous structures, ranging from the heart and great vessels ( aorta, superior and inferior venae cavae) to lymph nodes and nerves.

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What is a mediastinal mass?

Tannous. Mediastinal tumors are benign or cancerous growths that form in the mediastinum; that is, the area in the middle of the chest between the sternum (breastbone) and spinal column. The mediastinum, which separates the lungs, houses the heart, esophagus, trachea, great vessels, thymus, and lymph nodes.

Is the vagus nerve in the mediastinum?

Vagus Nerve. In the superior mediastinum, the vagus nerve has two distinctive paths: Right vagus nerve – runs parallel to the trachea and passes posteriorly to the superior vena cava and the right primary bronchus.

What part of the body is the thorax?

The thorax is the region between the abdomen inferiorly and the root of the neck superiorly. [1][2] It forms from the thoracic wall, its superficial structures (breast, muscles, and skin) and the thoracic cavity.

In which mediastinum is the heart located?

The middle mediastinum contains the heart, and its protective sheath, the pericardium. It also contains the tracheal bifurcation and the left and right main bronchi.

What is a mediastinal abnormality?

332) Introduction to mediastinal abnormalities. The mediastinum is the area within the centre of the chest containing the heart, great vessels, nerves, lymph nodes, trachea, oesophagus, and thymus. Two-thirds of mediastinal masses are benign.

What causes mediastinal lymph nodes?

Mediastinal lymphadenopathy generally suggests a problem related to the lungs. It is usually associated with tuberculosis and most commonly associated with lung cancer and chronic obstructive pulmonary disease (COPD).

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