The document summarizes fetal development from the first through ninth months of pregnancy. It describes the physical changes and growth that occurs each month, including the development of organs and limbs. By the fourth month, the fetus is about 4.3-4.6 inches long and has fingerprints on its fingers and toes. In the seventh month, the fetus weighs around 3.5 pounds and its body is well-formed. By the ninth month, the fetus is typically 18.5 inches long and weighs close to 6 pounds, with nearly fully developed lungs and brain.