Anatomy of the Oesophagus

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.

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.