The producers. Now that the baby has completed the task of forming all the critical body structures, the organs go to work. The liver secretes bile, the pancreas produces insulin, and the kidneys form urine to carry waste away. The urine is excreted into the amniotic fluid. Our little one's intestines, which have partially resided in the umbilical cord, have moved back into the abdomen now that there's enough room to accommodate them. With muscle layers forming in the gut, it'll soon be time to get things moving through the digestive system, too.
Head long. Our little one is now about the size of a large plum, weighing less than 1 ounce and measuring anywhere from 2.6 to 4 inches. The head takes up half of that length, thanks to all that brain development. Over the next few months, the body will grow at breakneck speed to catch up. When our baby is born, the head will be only a quarter of his total length.