Anatomy of the Oesophagus

How many inches from the incisors does the oesophagus pass through the diaphragm?

What is the curvature of the thoracic part of the oesophagus?

Where does the oesophagus deviate to reach the oesophageal opening of the diaphragm?

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 does the degree of Staal enlargement indicate?

What is the result of thebackward displacement of the esophagus?

What is shown in Figure 70?

Why is the surgical approach important in this case?

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?

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 nerve supply to the oesophagus?

What is the location of the oesophagus in the thorax?

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.

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.