The aorta (/eÉªËÉËrtÉ/) is the main artery in the human body, originating from the left ventricle of the heart and extending down to the abdomen, where it splits into two smaller arteries (the common iliac arteries). The aorta distributes oxygenated blood to all parts of the body through the systemic circulation.
Men and women should have a colonoscopy at age 50. African American men and women should have their first screening at age 45. Individuals with a history of a first-degree relative (parent, sibling or child) or a personal history of colorectal cancer should be screened using a different schedule.
1 If you have had colon cancer already, you need a colonoscopy every three years. 2  If you have had precancerous polyps in your colon, you need regular colonoscopies, the frequency of which is determined by the number and size of the polyps. If you are 50 years or older with no family history or personal history of polyps or cancer, then the first colonoscopy should be at 50. 2  If you are African American, your screening colonoscopy should start at age 45. 3  If that is normal, you should have one every eight years afterward.