Podcast
Questions and Answers
What anatomical landmark defines the anterior boundary of the thoracic plane?
What anatomical landmark defines the anterior boundary of the thoracic plane?
The sternal angle
Where does the superior mediastinum start and end?
Where does the superior mediastinum start and end?
Starts at the superior thoracic aperture and ends at the thoracic plane
Which vertebral disc level marks the posterior aspect of the thoracic plane?
Which vertebral disc level marks the posterior aspect of the thoracic plane?
The disc between T4 and T5
From where to where does the inferior mediastinum extend?
From where to where does the inferior mediastinum extend?
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What anatomical structures are found anteriorly in the thoracic plane?
What anatomical structures are found anteriorly in the thoracic plane?
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What forms the posterior boundary of the thoracic plane?
What forms the posterior boundary of the thoracic plane?
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Name the parts of the mediastinum shown in the image.
Name the parts of the mediastinum shown in the image.
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What structure marks the superior boundary of the mediastinum?
What structure marks the superior boundary of the mediastinum?
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Which part of the mediastinum is directly adjacent to the diaphragm?
Which part of the mediastinum is directly adjacent to the diaphragm?
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Into how many parts is the mediastinum divided?
Into how many parts is the mediastinum divided?
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Study Notes
Superior Mediastinum
- Located in the chest cavity above the heart
- Bounded by:
- Superiorly: Superior thoracic aperture at the root of the neck
- Inferiorly: Transverse thoracic plane
- Laterally: Pleurae
- Anteriorly: Manubrium of the sternum
- Posteriorly: First four thoracic vertebrae
Contents
- Thymus
- Great blood vessels
- Trachea
- Esophagus
- Thoracic duct
- Sympathetic trunks
- Phrenic nerve
- Vagus nerve
Mediastinum
- Divided by the thoracic plane (Sternal plane) into:
- Superior mediastinum: From superior thoracic aperture to thoracic plane
- Inferior mediastinum: From thoracic plane to diaphragm
Thoracic Plane
- An imaginary plane extending from:
- Anteriorly: Sternal angle to the lower border of T4
- Posteriorly: Lower border of T4 (disk between T4-TS)
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Description
Learn about the boundaries of the superior mediastinum, including its superior, inferior, lateral, anterior, and posterior limits. Identify the key structures involved.
