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.
Sheldon Marks, MD: Men should go every year starting at about age 50, for a complete exam which should include a prostate exam, a urine check and a PSA blood test. If they're in a high-risk category, if they have a family history of prostate cancer, African-American, then those men should probably start at age 40 or 45 being seen on an annual basis. Narrator: Why African-American? Sheldon Marks, MD: We're not sure why African-American men have a higher rate of prostate cancer.