Thoracic wall
Thoracic Wall
The Thoracic Wall (pronounced: tho-RAS-ik wall) is a complex structure that encloses the thoracic cavity and protects the organs within it.
Etymology
The term "Thoracic" comes from the Greek word "thorax", meaning "chest". The term "Wall" is derived from the Old English "weall", which means "rampart" or "defensive work".
Anatomy
The thoracic wall is composed of the sternum, 12 pairs of ribs, and 12 thoracic vertebrae. It is covered by skin and muscles, and lined by the pleura. The thoracic wall is divided into three parts: the anterior wall, the lateral wall, and the posterior wall.
- The Sternum (pronounced: STUR-num) is a flat bone located in the middle of the thoracic wall. It is connected to the ribs by costal cartilages.
- The Ribs (pronounced: ribs) are curved bones that form the main structure of the thoracic wall. There are 12 pairs of ribs, each of which is attached to a thoracic vertebra.
- The Thoracic Vertebrae (pronounced: tho-RAS-ik ver-te-bray) are the bones that form the spine in the upper part of the trunk. There are 12 thoracic vertebrae, each of which is connected to a rib.
Related Terms
- Thoracic Cavity (pronounced: tho-RAS-ik KAV-i-tee) is the space enclosed by the thoracic wall. It contains the heart, lungs, and other organs.
- Pleura (pronounced: PLOO-ra) is a thin membrane that lines the thoracic wall and covers the lungs.
- Costal Cartilages (pronounced: KOS-tal kar-ti-laj-es) are bars of hyaline cartilage that connect the ribs to the sternum.
External links
- Medical encyclopedia article on Thoracic wall
- Wikipedia's article - Thoracic wall
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