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.
A thickening and hardening of the walls of the arteries that interferes with the circulation of the blood. It can be caused by disease and is also associated with high blood pressure and diets that are rich in cholesterol and saturated fats. See also atherosclerosis.rteriosclerosis. n, pl-ses (-siËz). 1. (Pathology) a pathological condition of the circulatory system characterized by thickening and loss of elasticity of the arterial walls.