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.
Answer   The sternum is located at the top-centre of the chest, where the ribs come together, and can be felt quite easily by moving the hand downwards from the throat. â¦  Sternum is a Long Flat Bone shaped as T, which is places on a chest otherwise it is called Breast Bone breast bone.