Upper thorax: The superior thoracic aperture

The superior thoracic aperture opens towards the neck. It is bounded by the bones of the upper thorax ; manubrium of sternum, the first pair of ribs, and the body of the vertebra T1. The inferior thoracic aperture is almost completely covered by the diaphragm, separating it from the abdominal cavity. The mediastinum is the area of the thorax located between the two pleural sacs and encloses most of the organs found in the thorax . The mediastinum can be split into the superior and inferior mediastinum. The inferior mediastinum itself can be further divided into the anterior, middle and posterior mediastinum, which all lie between the sternal angle and the diaphragm. The superior mediastinum is the area of the thorax above the sternal angle (at the level of the T4 vertebra) and between the ... The thorax , commonly known as the chest, is the upper part of the torso that houses and protects vital organs such as the heart and lungs. It is a bony framework formed by the thoracic vertebrae, ribs, costal cartilages, and sternum, enclosing the thoracic cavity. [6] Here are ten of the best upper chest exercises plus instructions, and an example of how you can combine them into an upper chest workout.