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 The MTHFR gene C677T and A1298C polymorphisms were associated with an increased risk of bladder cancer in a Turkish population. 2  Meta-analysis. 3  In the Chinese Han population, the TT genotype for the MTHFR C677T gene appeared to be associated with increased coronary artery disease risk. Molecular genetic study was performed, and demonstrated that the patient was heterozygous for the CBS gene with the compound mutations T353 M and D444 N, and homozygous for the mutation C677T in the methylenetetrahydropholate reductase (MTHFR) gene.