Editing Thorax (section)

====Chest====
In the [[human body]], the region of the thorax between the [[neck]] and [[Thoracic diaphragm|diaphragm]] in the front of the body is called the chest. The corresponding area in an animal can also be referred to as the chest.

The shape of the chest does not correspond to that part of the [[thoracic skeleton]] that encloses the [[heart]] and [[lungs]]. All the breadth of the shoulders is due to the shoulder girdle, and contains the [[axilla]]e and the heads of the [[humerus|humeri]]. In the middle line the [[suprasternal notch]] is seen above, while about three fingers' breadth below it a transverse ridge can be felt, which is known as the [[sternal angle]] and this marks the junction between the manubrium and body of the [[sternum]]. Level with this line the second ribs join the sternum, and when these are found the lower ribs can often be counted. At the lower part of the sternum, where the seventh or last true ribs join it, the [[ensiform cartilage]] begins, and above this there is often a depression known as the pit of the [[stomach]].