A: The function of the cartilaginous rings of the trachea is to stabilize the trachea and keep it rigid while allowing the trachea to expand and lengthen when the person breathes. If the trachea was not supported in this way, it would simply collapse because of the pressure of the chest.
HCM remains the most common cardiovascular genetic disorder, occurring in at least 1 in 500 people in the general population. 7 HCM is a primary inherited disorder of the myocardium characterized by hypertrophy, usually of the left ventricle, in the absence of other loading conditions such as hypertension.
1 Cardiovascular diseases claim more lives than all forms of cancer combined. 2  Coronary heart disease is the most common type of heart disease, killing nearly 380,000 people annually. 3  In the United States, someone has a heart attack every 34 seconds. Cardiovascular diseases claim more lives than all forms of cancer combined. 2  Coronary heart disease is the most common type of heart disease, killing nearly 380,000 people annually. 3  In the United States, someone has a heart attack every 34 seconds.