1 00:00:00,206 --> 00:00:03,330 (gentle music) 2 00:00:03,330 --> 00:00:04,300 - [Narrator] It's true. 3 00:00:04,300 --> 00:00:07,020 Now that you're pregnant, you're eating for two, 4 00:00:07,020 --> 00:00:09,270 but how does your baby get the nourishment? 5 00:00:09,270 --> 00:00:11,840 As you eat, your food descends through your esophagus, 6 00:00:11,840 --> 00:00:15,640 into your stomach, and then intestines, where it's digested, 7 00:00:15,640 --> 00:00:18,970 broken down into glucose, fats, and proteins. 8 00:00:18,970 --> 00:00:20,170 Through digestion, 9 00:00:20,170 --> 00:00:22,370 these elements are absorbed into your blood 10 00:00:22,370 --> 00:00:24,700 and passed through the placenta. 11 00:00:24,700 --> 00:00:27,320 The placenta is a very efficient filter. 12 00:00:27,320 --> 00:00:30,320 It rejects many but not all harmful elements, 13 00:00:30,320 --> 00:00:31,890 such as bacteria. 14 00:00:31,890 --> 00:00:35,700 Smaller elements, oxygen, glucose, fats, proteins, 15 00:00:35,700 --> 00:00:39,090 vitamins, and minerals can pass through the placenta. 16 00:00:39,090 --> 00:00:40,840 After they've entered the placenta, 17 00:00:40,840 --> 00:00:42,700 these elements are passed onto the baby 18 00:00:42,700 --> 00:00:44,050 through the umbilical cord.