The quad cab has a smaller back seat and a larger bed, the crew cab has a larger back seat and a smaller bed. To compare them you can go to http://www.ramtrucks.com/en/2011/ram_150... and select the Build My Own option from the bottom of the page.
Heart muscle thickening (called cardiac hypertrophy) can be a healthy response to exercise and pregnancy; however, it often occurs in people with high blood pressure, diabetes, heart failure and certain genetic conditions.
Hypertrophic cardiomyopathy. This type involves abnormal thickening of your heart muscle, particularly affecting the muscle of your heart's main pumping chamber (left ventricle).The thickened heart muscle can make it harder for the heart to pump blood. Iron buildup in your heart muscle (hemochromatosis). 2  A condition that causes inflammation and can cause lumps of cells to grow in the heart and other organs (sarcoidosis). 3  A disorder that causes the buildup of abnormal proteins (amyloidosis).