The thorax consists of ribs, the sternum, and thoracic vertebrae.
The sternum has three parts:
The manubrium (manubrium sterni)
The body (corpus sterni)
The xiphoid process (processus xiphoideus)
The jugular notch (incisura jugularis) is located on the upper edge of the handle.
The clavicular notch (incisura clavicularis) is located to the side (on each side) and is connected with the clavicle.
A costal notch (incisura costalis) for articulation with the cartilage of rib I and a notch for articulation with the superior edge of the cartilage of rib II are distinguished on the lateral surface of the handle.
The inferior edge of the cartilage of rib II is attached to the body of the sternum. The ribs III-VII are connected to the corresponding fossae on the body of the sternum.
The ribs are not attached to the xiphoid process.
The sternal angle (angulus sterni), which slightly projects forward, is formed at the junction of the handle and the body of the sternum.
The infrasternal angle (angulus infrasternalis) is the angle that is formed below the xiphoid process when the rib arches join the sternum.
- manubrium sterni
- manubrium of sternum
- corpus sterni
- body of sternum
- processus xiphoideus
- xiphoid process
- incisura jugularis
- jugular notch
- incisura clavicularis
- clavicular notch
- incisura costalis
- costal notch
- angulus sterni
- sternal angle
- angulus infrasternalis
- infrasternal angle