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.
Certain factors increase your risk for colorectal cancer and may call for earlier or more frequent screening. People with a close relative diagnosed with colorectal cancer before age 60 should begin screening at age 40 -- or 10 years earlier than the age the relative developed cancer.he American College of Gastroenterology further advises that African-Americans begin screening at age 45 due to increased risk. Colonoscopy allows visualization of the rectum and the entire length of the colon and should be repeated every 10 years.