. . . "SG ??? ??? ??? placenta a supply depot and a waste- removal system for the fetus ??? ??? ??? central nervous system, a beating heart, a fully formed digestive system, well defined fingers and toes, and the beginning of facial features the fetus at 8 weeks ??? ??? ??? 340-450 more cals per day calorie needs for a pregnant woman ??? ??? ??? milk, cheese, yogurt, and other calcium rich foods For preg" . .