DEV2022 Lecture Notes - Lecture 7: Azygos Vein, Aorta, Fetus
Document Summary
Thorax in vertebrates find support in vertebral column posteriorly, the ribs and sternum and the muscles to which all of these structures are associated. There is an inlet through which these structures travel n and s, but the outlet is closed almost completely by the skeletal muscles structure (diaphragm). In the midline is a tall, long column of space or partition. In that partition are organs and big blood vessels and nerves. To the lateral side (blue), we find the lungs. The two compartments are separate, and they do not communicate. General principle of cavities and spaces inside the thorax: The general partition is cylinder running down the middle, where this is connective tissue space. On either side are the cavities for the lungs. The serous cavity is the watery type fluid, is completely enclosed, so the l lung does not communicate with the r lung. It is lined by 2 layers of the serous membrane (wet membrane).