Podcast
Questions and Answers
How many inches from the incisors does the oesophagus pass through the diaphragm?
How many inches from the incisors does the oesophagus pass through the diaphragm?
- 30 inches
- 35 inches
- 24 inches
- 17 inches (correct)
What is the curvature of the thoracic part of the oesophagus?
What is the curvature of the thoracic part of the oesophagus?
- Concave posteriorly
- Convex posteriorly
- Convex anteriorly
- Concave anteriorly (correct)
Where does the oesophagus deviate to reach the oesophageal opening of the diaphragm?
Where does the oesophagus deviate to reach the oesophageal opening of the diaphragm?
- Below the vel of T (correct)
- Above the vel of T
- At the level of the diaphragm
- At the level of the bronchus
How many sites of constriction are found at the beginning of the oesophagus?
How many sites of constriction are found at the beginning of the oesophagus?
What is the direction of the left lateral curves of the oesophagus?
What is the direction of the left lateral curves of the oesophagus?
What does the degree of Staal enlargement indicate?
What does the degree of Staal enlargement indicate?
What is the result of thebackward displacement of the esophagus?
What is the result of thebackward displacement of the esophagus?
What is shown in Figure 70?
What is shown in Figure 70?
Why is the surgical approach important in this case?
Why is the surgical approach important in this case?
What is the effect of the azygos vein on the esophagus?
What is the effect of the azygos vein on the esophagus?
What is the source of the blood supply to the thoracic part of the oesophagus?
What is the source of the blood supply to the thoracic part of the oesophagus?
Which ganglia give rise to the sympathetic nerves that supply the oesophagus?
Which ganglia give rise to the sympathetic nerves that supply the oesophagus?
What is the pathway of the lymphatic drainage of the thoracic part of the oesophagus?
What is the pathway of the lymphatic drainage of the thoracic part of the oesophagus?
What is the nerve supply to the oesophagus?
What is the nerve supply to the oesophagus?
What is the location of the oesophagus in the thorax?
What is the location of the oesophagus in the thorax?
Flashcards
Oesophageal diaphragm distance
Oesophageal diaphragm distance
The oesophagus is approximately 17 inches from the incisors as it passes through the diaphragm.
Thoracic oesophagus curvature
Thoracic oesophagus curvature
The thoracic section of the oesophagus curves concavely anteriorly.
Oesophageal diaphragm entry point
Oesophageal diaphragm entry point
The oesophagus deviates below the level of vertebra T to reach the oesophageal opening of the diaphragm.
Oesophagus constrictions
Oesophagus constrictions
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Left lateral esophageal curves
Left lateral esophageal curves
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Staal enlargement degree
Staal enlargement degree
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Backward esophageal displacement result
Backward esophageal displacement result
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Figure 70's depiction
Figure 70's depiction
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Surgical approach importance
Surgical approach importance
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Azygos vein's effect
Azygos vein's effect
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Thoracic esophagus blood supply
Thoracic esophagus blood supply
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Oesophageal sympathetic nerves source
Oesophageal sympathetic nerves source
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Thoracic Esophagus Lymphatic Drainage
Thoracic Esophagus Lymphatic Drainage
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Oesophagus nerve supply
Oesophagus nerve supply
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Oesophagus Thoracic Location
Oesophagus Thoracic Location
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Study Notes
Oesophagus Anatomy and Physiology
- The oesophagus passes through the diaphragm approximately 1 inch from the incisors.
- The thoracic part of the oesophagus exhibits a natural curvature that is essential for its function.
- To reach the oesophageal opening of the diaphragm, the oesophagus deviates to the left.
- There are two sites of constriction at the beginning of the oesophagus.
- The left lateral curves of the oesophagus direct away from the midline, enhancing swallowing dynamics.
Clinical Significance
- The degree of Staal enlargement indicates potential pathology or anatomical variations in the oesophagus.
- Backward displacement of the esophagus can result in swallowing difficulties and may indicate underlying medical conditions.
- Figure 70 typically demonstrates the anatomical relationships or pathologies associated with oesophageal conditions.
- A surgical approach to the oesophagus is crucial for minimizing complications and ensuring access to the area during procedures.
Vascular and Nervous Supply
- The azygos vein runs along the right side of the oesophagus, providing venous drainage and impacting its position.
- Blood supply to the thoracic part of the oesophagus is primarily from the aorta and its branches, as well as the bronchial arteries.
- The sympathetic nerves supplying the oesophagus originate from the paravertebral and prevertebral ganglia.
- Lymphatic drainage of the thoracic section follows a pathway towards the mediastinal and cervical lymph nodes.
- The nerve supply to the oesophagus is mainly from the vagus nerve and sympathetic fibers.
Thoracic Location
- In the thorax, the oesophagus is located posterior to the trachea and aorta, running from the pharynx to the stomach.
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Description
Test your knowledge of the oesophagus' structure and location, including its constrictions and curvatures. Learn about the different parts of the oesophagus and how they relate to other nearby organs. This quiz is perfect for students of anatomy and medicine.
