What nerves are in the superior mediastinum?
Nerves
- Sympathetic Innervation.
- Parasympathetic Innervation.
- Ophthalmic Nerve.
- Maxillary Nerve.
- Mandibular Nerve.
What is the superior mediastinum?
The superior mediastinum is the region sandwiched between the pleural sac on each side above an imaginary line from the angle of Louis in front to the fourth/fifth thoracic intervertebral disc behind.
What structures are located in the superior mediastinum?
Superior Mediastinum: Organs: thymus, trachea, esophagus. Arteries: aortic arch, brachiocephalic trunk, left common carotid artery, left subclavian artery. Veins and lymphatics: superior vena cava, brachiocephalic veins, the arch of the azygos, thoracic duct.
What does the superior mediastinum cavity contain?
The superior mediastinum contains thyroid gland, aortic arch and great vessels, proximal portions of the vagus, phrenic, and recurrent laryngeal nerves, esophagus, trachea, thoracic duct, and lymph nodes.
Where does the superior mediastinum start?
superior thoracic aperture
The mediastinum can be divided into an upper (or superior) and lower (or inferior) part: The superior mediastinum starts at the superior thoracic aperture and ends at the thoracic plane.
Where is the right superior mediastinum?
The superior mediastinum is a space bounded anteriorly by the manubrium of the sternum, and posteriorly by the bodies of T1-T4 vertebrae. Its superior border is an oblique plane extending from the jugular notch of the manubrium to the superior border of T1 vertebra.
Why is mediastinum important?
The mediastinum is an important region of the body located between the lungs. Structures that lie in this region include the heart, the esophagus, the trachea, and large blood vessels including the aorta. The mediastinum is also home to lymph nodes.
What is the function of 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 separates inferior and superior mediastinum?
The transverse thoracic plane, thoracic plane, plane of Louis or plane of Ludwig is an important anatomical plane at the level of the sternal angle and the T4/T5 intervertebral disc. It serves as an imaginary boundary that separates the superior and inferior mediastinum.
What is a mediastinum in anatomy?
The mediastinum is a division of the thoracic cavity; it contains the heart, thymus gland, portions of the esophagus and trachea, and other structures. For clinical purposes it is traditionally divided into the anterior, middle, posterior, and superior regions.
What is the largest organ in the mediastinum?
Middle: The middle mediastinum is the largest portion, and contains the heart, blood vessels including those that travel from the lungs to the heart, and lymph nodes.
What is mediastinum and hilum?
The hilum encompasses the root of the lung and consists of the major pulmonary vessels, bronchial walls, and lymph nodes.
What are the nerves that run through the superior mediastinum?
Superior Mediastinum. The superior mediastinum contains three visceral organs including the esophagus, the trachea and remnants of the thymus. The nerves that run through this area are three and there are also two different nervous plexuses. The phrenic nerve, the vagus nerve and the left recurrent laryngeal nerve are the singular nerves,…
What are the borders of superior mediastinum?
Key Facts. Superior mediastinum. Borders: first rib (superior) – T4 (inferior) Content: esophagus, trachea, thymus; phrenic nerve, vagus nerve, left recurrent laryngeal nerve; superior vena cava, brachiocephalic veins, aortic arch, thoracic duct.
What is the function of the mediastinum?
The mediastinum is the central compartment of the thoracic cavity, located between the two pleural sacs. It contains most of the thoracic organs, and acts as a conduit for structures traversing the thorax on their way into the abdomen. Superior mediastinum – extends upwards, terminating at the superior thoracic aperture.
What is the mediastina of the thorax?
Fig 1 – The mediastina of the thorax. The superior mediastinum contains neural, vascular and respiratory structures passing from the adjacent regions of the neck and abdomen (via the inferior mediastinum).