Examples of muscle diseases include muscular dystrophy. Nervous system diseases, such as paralysis, can lead to shortness of breath. Heart Diseases Many conditions that affect the heart and its capacity to move blood through the lungs can lead to shortness of breath. These conditions include valve diseases of the heart and others. Lung Tissue Diseases
Sternum, also called breastbone, in the anatomy of tetrapods (four-limbed vertebrates), elongated bone in the centre of the chest that articulates with and provides support for the clavicles (collarbones) of the shoulder girdle and for the ribs. Its origin in evolution is unclear.
The sternum or breastbone is the central bone at the front of the chest to which the clavicle (collarbone) and ribs attach. It is an elongated flat bone made up of three parts â manubrium (uppermost part), body of the sternum (longest part in the middle) and the xiphoid process (short pointed part at the bottom).