Transcript: style="margin: 0.0px 0.0px 0.0px 0.0px; font: 12.0px Times New Roman;">You probably won’t know whether your baby is floating upside down or right side up—but as of this week, he or she sure will! As the development of the inner ear becomes complete, this important component of the vestibular system enhances the baby’s sense of movement and position. In addition, your rapidly growing fetus has gained four ounces since last week, and he’s now about the length of an ear of corn. While your baby is in utero, he receives oxygen through your placenta, but you both know that won’t always be the case. To prepare for the work of taking in oxygen once he’s born, your baby’s lungs are beginning to produce surfactant. Surfactant is a substance that keeps the air sacs in the lungs from collapsing or sticking together during breathing. In addition, your fetus’s brain and taste buds are continuing to grow and develop during your 24th week. To see what’s in store for your baby’s continued development, check back next week for your newest video update!