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.
cleft sternum. A congenital fissure of the sternum. sternum The breastbone. sternum the breastbone that occurs in the ventral region of the chest and to which, in flying birds where the bone is keel-shaped, are attached the pectoral muscles associated with flight. Anteriorly it is connected to the shoulder girdle, and the ventral ends of the ribs are attached along its length. Sternum