W8MD Diet | COVID-19 portal | Vitamin D | Vaccine | Keto

WikiMD is the world's largest medical encyclopedia with
13,861 pages, 4,142,541 edits & 40,221,475 views.

Free unbiased diet, health and wellness info!

4. The Thoracic Cavity

From WikiMD's free health, diet & wellness encyclopedia
Jump to navigation Jump to search

Posterior Mediastinum In Lesson 3, we discussed the subdivisions of the mediastinum as described by anatomists. As a summary, remember that the mediastinum is subdivided into superior and inferior parts. The inferior mediastinum is further subdivided into anterior, middle and posterior parts. The anterior boundary of the anterior part is the back of the sternum. Its posterior boundary is the pericardium of the heart.

The middle mediastinum is the pericardium and its cavity.

The anterior boundary of the posterior mediastinum is the posterior pericardial wall. The posterior boundary is the anterior surfaces of the bodies of thoracic vertebrae T5-T12.

In the dissection of cadavers, the posterior mediastinum is exposed by removing the pericardial sac and the heart. When this is done, we see the structures that lie immediately behind the pericardium. The relationships of the structures in the posterior mediastinum should also be studied on cross sections through the thorax and shown in the section on cross sections. In the following images, I have started out Level 1 with the pericardium.

 

4. The Thoracic Cavity is part of WikiMD's free ^articles!

^4. The Thoracic Cavity (article) is provided for informational purposes only. No expressed or implied warranties as to the validity of content.
WikiMD is not a substitute for professional advice. By accessing and using WikiMD you agree to the terms of use.
Templates etc. when imported from Wikipedia, are licensed under CC BY-SA 3.0. See full disclaimers.
W8MD weight loss logo

Ad. Tired of being overweight?. W8MD's physician weight loss program can HELP. Tele medicine available